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Special English 美语发音词汇手册（O-T）

By http://www.unsv.com

Broadcast: Monday, March 28, 2005

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Parts of Speech
Prefixes
Expressions
Science Words
Organs of the Body

注：用鼠标左键点击带有下划线的单词词条即可听到发音

O

obey - v. to act as one is ordered to act
object - v. to show that one does not like or approve; to protest; n. something not alive that can be seen or touched
observe - v. to watch; to look at carefully; to celebrate or honor something ("They will observe the anniversary of the day she was born.")
occupy - v. to take and hold or to control by force
ocean - n. the area of salt water that covers almost seventy-five percent of the earth's surface; any of the five main divisions of this water
of - prep. made from; belonging to; about; connected to; included among
off - ad. away; at a distance; condition when something is no longer operating or continuing; not on; not connected
offensive - n. a military campaign of attack; ad. having to do with attacking
offer - v. to present or propose; n. the act of presenting or proposing; that which is presented or proposed
office - n. a room or building where business or work is done; a public position to which one is elected or appointed
officer - n. a person in the military who commands others; any person who is a member of a police force
official - n. a person with power in an organization; a representative of an organization or government; ad. of or about an office; approved by the government or someone in power
often - ad. many times
oil - n. a thick liquid that does not mix with water and that burns easily; a black liquid taken from the ground and used as fuel
old - ad. not young or new; having lived or existed for many years
on - prep. above and held up by; touching the upper surface of ("The book is on the table."); supported by ("He is on his feet."); about ("The report on the meeting is ready."); at the time of ("He left on Wednesday.")
once - ad. one time only
only - ad. being the single one or ones; no more than ("We have only two dollars.")
open - v. to start ("They opened talks."); ad. not closed; not secret
operate - v. to do work or a job; to cut into the body for medical reasons
opinion - n. a belief based on one's own ideas and thinking
oppose - v. to be against; to fight against
opposite - ad. different as possible; completely different from; exactly the other way ("North is the opposite direction from south.")
oppress - v. to make others suffer; to control by the use of unjust and cruel force or power
or - conj. giving another of two choices; giving the last of several choices
orbit - v. to travel in space around a planet or other object; n. the path or way an object travels in space around another object or planet
order - v. to give a command; to tell someone what to do; n. a command; the correct or normal way things are organized; a peaceful situation in which people obey laws
organize - v. to put in order; to put together into a system
other - ad. different; of another kind; the remaining one or ones of two or more ("That man is short; the other is tall.")
our - ad. of or belonging to us
oust - v. to force to leave; to remove by force
out - ad. away from the inside; opposite of in
over - conj. above; covering; across, in or on every part of ("all over the world")
overthrow - v. to remove from power; to defeat or end by force
owe - v. to pay or have to repay (usually money) in return for something received
own - v. to have or possess for oneself

P

pain - n. a hurt or suffering somewhere in the body
paint - v. to cover with a liquid color; to make a picture with liquid colors; n. a colored liquid used to cover or protect a surface
pan - n. a metal container used for cooking
paper - n. a thin, flat material made from plants or cloth often used for writing
parachute - n. a device that permits a person or thing to fall slowly from an airplane or helicopter to the ground
parade - n. a group of people and vehicles moving together to celebrate a special event or anniversary
pardon - v. to forgive for a crime and release from punishment
parent - n. a father or mother
parliament - n. a government lawmaking group
part - n. something less than the whole; not all of something
party - n. a group of people working together for a political purpose; a group of people or friends gathered together for enjoyment
pass - v. to go by or move around something; to move along; to cause or permit to go
passenger - n. a person travelling by airplane, train, boat or car who is not the pilot or driver
passport - n. a document permitting a person to travel to another country
past - n. the time gone by; the time before; ad. recent; immediately before; former
path - n. a narrow way for walking; a way along which something moves
patient - n. a person being treated by a doctor for a health problem
pay - v. to give money for work done or for something bought
peace - n. the condition of freedom from war, fighting or noise; rest; quiet
people - n. any group of persons; all the persons of a group, race, religion or nation ("the American people")
percent - n. a part of every hundred ("Ten is ten percent of one hundred.")
perfect - ad. complete or correct in every way; completely right or good; without mistakes
perform - v. to speak, dance or sing in front of others
period - n. an amount of time within events, restrictions or conditions
permanent - ad. never changing; lasting for a very long time or for all time
permit - v. to let; to make possible
person - n. a man, woman or child
physical - ad. of the body
physics - n. the study of motion, matter and energy
picture - n. something that shows what another thing looks like; an idea or representation of something as seen by the eye; a painting; what is made with a camera
piece - n. a part of something larger
pig - n. a farm animal used for its meat
pilot - n. one who guides or flies an airplane or helicopter
pipe - n. a long, round piece of material used to move liquid or gas
place - v. to put something somewhere; n. an area or a part of an area; space where a person or thing is; any room, building, town or country
plan - v. to organize or develop an idea or method of acting or doing something ">("They plan to have a party."); n. an organized or developed idea or method ("The plan will not work.")
planet - n. a large object in space that orbits the sun ("Earth is a planet.")
plant - v. to put into the ground to grow; n. a living growth from the ground which gets its food from air, water and earth
plastic - n. a material made from chemicals that can be formed and made into things
play - v. to have fun; to not work; to take part in a sport; to make music on an instrument; n. a story acted in a theater
please - v. to make one happy; to give enjoyment
plenty - n. all that is needed; a large enough amount
plot - v. to make secret plans; n. a secret plan to do something wrong or illegal
poem - n. words and their sounds organized in a special way to express emotions
point - v. to aim one's finger toward; to aim; n. the sharp end of something
poison - n. a substance that can destroy life or damage health
police - n. a government agency responsible for guarding the public, keeping order, and making sure people obey the law; members of that agency
policy - n. an established set of plans or goals used to develop and make decisions in politics, economics or business
politics - n. the activities of government and of those who are in public office
pollute - v. to release dangerous or unpleasant substances into the air, soil or water
poor - n. people with little or no money; ad. lacking money or goods; of bad quality
popular - ad. liked by many people; generally approved by the public
population - n. all the people in a place, city or country
port - n. a city where ships load or unload goods; a place on a coast where ships can be safe from a storm
position - n. a place; the way of holding the body; the way a thing is set or placed; a job (or level of a job) in an organization
possess - v. to have; to own; to control or be controlled by
possible - ad. able to be done; can happen or is expected to happen
postpone - v. to delay action until a later time
pour - v. to flow; to cause to flow
power - n. the ability to control or direct others; control; strength; ruling force; force or energy used to do work ("Water power turns the wheel.")
praise - v. to say good things about; to approve
pray - v. to make a request to a god or spirit; to praise a god or spirit
pregnant - ad. carrying a child within the body before it is born; expecting to give birth to a baby
present - v. to offer for consideration ("We will present our idea to the committee."); n. a gift ("I gave them a present for their anniversary."); now ("The present time is a good time."); ad. to be at a place ("I was present at school yesterday.")
president - n. the chief official of a country that is a republic; the leader of an organization
press - v. to urge strongly; n. newspapers, magazines and other publications
pressure - n. the force produced when something is pushed down or against something else
prevent - v. to keep or stop from going or happening
price - n. the amount of money for which anything is bought, sold or offered for sale
prison - n. a place where a person is kept as punishment for a crime
private - ad. of or about a person or group that is secret; opposite public
prize - n. something offered or won in a competition; something of value that one must work hard for to get
probably - ad. a good chance of taking place; a little more than possible
problem - n. a difficult question or situation with an unknown or unclear answer
process - n. an operation or series of changes leading to a desired result
produce - v. to make; to create; to cause something to be; to manufacture
profession - n. a job that requires special training
professor - n. a teacher at a college or university
profit - n. money gained from a business activity after paying all costs of that activity
program - n. a plan of action; the different events or parts of a meeting or show
progress - n. movement forward or toward improvement or a goal
project - n. a planned effort to do something
propaganda - n. ideas or information used to influence opinions
property - n. anything owned by someone such as land, buildings or goods
propose - v. to present or offer for consideration
protect - v. to guard; to defend; to prevent from being harmed or damaged
protest - v. to speak against; to object
prove - v. to show to be true
provide - v. to give something needed or wanted
public - ad. of or about all the people in a community or country; opposite private
publication - n. something that is published such as a book, newspaper or magazine
publish - v. to make public something that is written; to include something in a book, newspaper or magazine
pull - v. to use force to move something toward the person or thing using the force; opposite push
pump - v. to force a gas or liquid up, into or through
punish - v. to cause pain, suffering or loss for doing something bad or illegal
purchase - v. to buy with money or with something of equal value; n. that which is bought
pure - ad. free from anything that is different or that reduces value; clean
purpose - n. the reason or desired effect for doing something; goal
push - v. to use force to move something away from the person or thing using the force; opposite pull
put - v. to place; to set in position

Q

quality - n. that which something is known to have or be ("An important quality of steel is its strength."); amount of value or excellence ("Their goods are of the highest quality.")
question - v. to ask; to express wonder or disbelief; n. a sentence or word used in asking for information; a problem; an issue to be discussed
quick - ad. fast
quiet - ad. with little or no noise; having little or no movement; calm

R

race - v. to run; to take part in a competition to decide who or what can move fastest; to take part in a campaign for political office; n. one of the major groups that humans can be divided into because of a common physical similarity, such as skin color
radar - n. a device that uses radio signals to learn the position or speed of objects that may be too far away to be seen
radiation - n. waves of energy from something that produces heat or light; energy from a nuclear substance, which can be dangerous
radio - n. the system of sending and receiving signals or sounds through the air without wires
raid - v. to make a sudden attack; n. a sudden attack carried out as an act of war, or for the purpose of seizing or stealing something
railroad - n. a road for trains; a company that operates such a road and its stations and equipment
rain - n. water falling from the sky
raise - v. to lift up; to move to a higher position; to cause to grow; to increase
rare - ad. not common; not usual; not often
rate - n. speed; a measure of how quickly or how often something happens; the price of any thing or service that is bought or sold
reach - v. to put a hand toward; to arrive at; to come to
react - v. to act as a result of or in answer to
read - v. to look at and understand the meaning of written words or numbers
ready - ad. prepared; completed; organized; willing
real - ad. true; truly existing; not false
realistic - ad. in agreement with the way things are
reason - n. the cause for a belief or act; purpose; something that explains
reasonable - ad. ready to listen to reasons or ideas; not extreme; ready or willing to compromise
rebel - v. to act against a government or power, often with force; to refuse to obey; n. one who opposes or fights against the government of his or her country
receive - v. to get or accept something given, offered or sent
recent - ad. a short time ago
recession - n. a temporary reduction in economic activity, when industries produce less and many workers lose their jobs
recognize - v. to know or remember something or someone that was known, known about or seen before; to accept another nation as independent and establish diplomatic ties with its government
record - v. to write something in order to have it for future use; to put sound or pictures in a form that can be kept and heard or seen again; n. a writing that shows proof or facts about something
recover - v. to get again something that was lost, stolen or taken away ("The police recovered the stolen money."); to return to normal health or normal conditions She is expected to recover from the operation.")
red - ad. having the color like that of blood
reduce - v. to make less or smaller in number, size or amount; to cut
reform - v. to make better by changing; to improve; n. a change to a better condition
refugee - n. a person who has been forced to flee because of unjust treatment, danger or war
refuse - v. to reject; to not accept, give or do something
regret - n. a feeling of sadness or sorrow about something that is done or that happens
reject - v. to refuse to accept, use or believe
relation - n. understandings or ties between nations; members of the same family; people connected by marriage or family ties
release - v. to free; to permit to go; to permit to be known or made public
religion - n. a belief in, or the honoring of, a god or gods
remain - v. to stay in a place after others leave; to stay the same
remains - n. a dead body
remember - v. to think about the past; opposite forget
remove - v. to take away or take off; to put an end to; to take out of a position or office
repair - n. work done to fix something
repeat - v. to say or do again
report - v. to tell about; to give the results of a study or investigation; n. the story about an event; the results of a study or investigation; a statement in which the facts may not be confirmed
represent - v. to act in the place of someone else; to substitute for; to serve as an example
repress - v. to control or to restrict freedoms by force
request - v. to ask for; n. the act of asking for
require - v. to need or demand as necessary
rescue - v. to free from danger or evil
research - n. a careful study to discover correct information
resign - v. to leave a position, job or office
resist - v. to oppose; to fight to prevent
resolution - n. an official statement of agreement by a group of people, usually reached by voting
resource - n. anything of value that can be used or sold
responsible - ad. having a duty or job to do ("He is responsible for preparing the report."); being the cause of ("They were responsible for the accident.")
rest - v. to sit, lie down or sleep to regain strength; n. that which remains; the others
restrain - v. to keep controlled; to limit action by a person or group
restrict - v. to limit; to prevent from increasing or becoming larger
result - v. to happen from a cause; n. that which follows or is produced by a cause; effect
retire - v. to leave a job or position because one is old or in poor health
return - v. to go or come back; to bring, give, take or send back
revolt - v. to protest violently; to fight for a change, especially of government
rice - n. a food grain
rich - ad. having much money or goods; having plenty of something
ride - v. to sit on or in and be carried along; to travel by animal, wheeled vehicle, airplane or boat
right - n. what a person legally and morally should be able to do or have ("It is their right to vote."); ad. agreeing with the facts; good; correct; opposite wrong; on the side that is toward the east when one is facing north; opposite left
riot - v. to act with many others in a violent way in a public place; n. a violent action by a large group of people
rise - v. to go up; to go higher; to increase; to go from a position of sitting or lying to a position of standing
risk - n. the chance of loss, damage or injury
river - n. a large amount of water that flows across land into another river, a lake or an ocean
road - n. a long piece of hard ground built between two places so people can walk, drive or ride easily from one place to the other
rob - v. to take money or property secretly or by force; to steal
rock - n. a hard piece of mineral matter
rocket - n. a device shaped like a tube that moves through air or space by burning gases and letting them escape from the back or bottom, sometimes used as a weapon
roll - v. to turn over and over; to move like a ball
room - n. a separate area within a building with its own walls
root - n. the part of a plant that is under the ground and takes nutrients from the soil
rope - n. a long, thick piece of material made from thinner pieces of material, used for tying
rough - ad. not flat or smooth; having an uneven surface; violent; not made well
round - ad. having the shape of a ball or circle
rub - v. to move something over the surface of another thing
rubber - n. a substance made from the liquid of trees with the same name, or a similar substance made from chemicals
ruin - v. to damage severely; to destroy
rule - v. to govern or control; to decide; n. a statement or an order that says how something must be done
run - v. to move quickly by steps faster than those used for walking

S

sabotage - v. to damage or destroy as an act against an organization or nation ("The rebels sabotaged the railroad.")
sacrifice - v. to do without something or to suffer a loss for a belief, idea, goal or another person
sad - ad. not happy
safe - ad. away from harm or danger
sail - v. to travel by boat or ship
sailor - n. a person involved in sailing a boat or ship
salt - n. a white substance found in sea water and in the ground, used to affect the taste of food
same - ad. not different; not changed; like another or others
sand - n. extremely small pieces of crushed rock found in large amounts in deserts and on coasts
satellite - n. a small object in space that moves around a larger object; an object placed in orbit around the earth
satisfy - v. to give or provide what is desired, needed or demanded
save - v. to make safe; to remove from harm; to keep for future use
say - v. to speak; to express in words
school - n. a place for education; a place where people go to learn
science - n. the study of nature and the actions of natural things, and the knowledge gained about them
sea - n. a large area of salt water, usually part of an ocean
search - v. to look for carefully
season - n. one of the four periods of the year that is based on the earth's position toward the sun (spring, summer, autumn, winter); a period of time based on different weather conditions ("dry season", "rainy season"); a period during the year when something usually happens ("baseball season")
seat - n. a thing to sit on; a place to sit or the right to sit there ("a seat in parliament")
second - ad. the one that comes after the first
secret - n. something known only to a few and kept from general knowledge; ad. hidden from others; known only to a few
security - n. freedom from danger or harm; protection; measures necessary to protect a person or place ("Security was increased in the city.")
see - v. to know or sense through the eyes; to understand or know
seed - n. the part of a plant from which new plants grow
seek - v. to search for ("They are seeking a cure for cancer."); to try to get ("She is seeking election to public office."); to plan to do ("Electric power companies are seeking to reduce their use of coal.")
seem - v. to appear to be ("She seems to be in good health.")
seize - v. to take quickly by force; to take control of quickly; to arrest
self X - n. all that which makes one person different from others
sell - v. to give something in exchange for money
Senate - n. the smaller of the two groups in the governments of some countries, such as in the United States Congress
send - v. to cause to go; to permit to go; to cause to be carried, taken or directed to or away from a place
sense - v. to come to know about by feeling, believing or understanding; n. any of the abilities to see, hear, taste, smell or feel
sentence - v. to declare the punishment for a crime; n. the punishment for a crime
separate - v. to set or keep people, things or ideas away from or independent from others; ad. not together or connected; different
series - n. a number of similar things or events that follow one after another in time, position or order
serious - ad. important; needing careful consideration; dangerous
serve - v. to work as an official; to be employed by the government; to assist or help
service - n. an organization or system that provides something for the public ("Schools and roads are services paid for by taxes."); a job that an organization or business can do for money; military organizations such as an army, navy or air force; a religious ceremony
set - v. to put in place or position; to establish a time, price or limit
settle - v. to end (a dispute); to agree about (a problem); to make a home in a new place
several - ad. three or more, but not many
severe - ad. not gentle; causing much pain, sadness or damage
sex - n. either the male or female group into which all people and animals are divided because of their actions in producing young; the physical activity by which humans and animals can produce young
shake - v. to move or cause to move in short, quick movements
shape - v. to give form to; n. the form of something, especially how it looks
share - v. to give part of something to another or others; n. a part belonging to, given to or owned by a single person or a group; any one of the equal parts of ownership of a business or company
sharp - ad. having a thin edge or small point that can cut or hurt; causing hurt or pain
she - pro. the girl or woman who is being spoken about
sheep - n. a farm animal used for its meat and hair
shell - v. to fire artillery; n. a metal container that is fired from a large gun and explodes when it reaches its target; a hard outside cover
shelter - v. to protect or give protection to; n. something that gives protection; a place of safety
shine - v. to aim a light; to give bright light; to be bright; to clean to make bright
ship - v. to transport; n. a large boat
shock - v. to cause to feel sudden surprise or fear; n. something that greatly affects the mind or emotions; a powerful shake, as from an earthquake
shoe - n. a covering for the foot
shoot - v. to cause a gun or other weapon to send out an object designed to kill; to use a gun
short - ad. lasting only for a small period of time; not long; opposite tall
should - v. used with another verb (action word) to show responsibility ("We should study."), probability ("The talks should begin soon."), or that something is believed to be a good idea ("Criminals should be punished.")
shout - v. to speak very loudly
show - v. to make something be seen; to make known; n. a play or story presented in a theater, or broadcast on radio or television, for enjoyment or education; something organized to be seen by the public
shrink - v. to make or become less in size, weight or value
sick - ad. suffering physically or mentally with a disease or other problem; not in good health
sickness - n. the condition of being in bad health
side - n. the outer surfaces of an object that are not the top or bottom; parts away from the middle; either the right or left half of the body
sign - v. to write one's name; n. a mark or shape used to mean something; evidence that something exists or will happen; a flat piece of material with writing that gives information
signal - v. to send a message by signs; n. an action or movement that sends a message
silence - v. to make quiet; to stop from speaking or making noise; n. a lack of noise or sound
silver - n. a valued white metal
similar - ad. like something else but not exactly the same
simple - ad. easy to understand or do; not difficult or complex
since - prep. from a time in the past until now ("I have known her since we went to school together.")
sing - v. to make music sounds with the voice
single - ad. one only
sink - v. to go down into water or other liquid
sister - n. a female with the same father or mother as another person
sit - v. to rest on the lower part of the body without the support of the legs; to become seated
situation - n. the way things are during a period of time
size - n. the space occupied by something; how long, wide or high something is
skeleton - n. all the bones of a human or other animal together in their normal positions
skill - n. the ability gained from training or experience
skin - n. the outer covering of humans and most animals
sky - n. the space above the earth
slave - n. a person owned or controlled by another
sleep - v. to rest the body and mind with the eyes closed
slide - v. to move smoothly over a surface
slow - v. to reduce the speed of; ad. not fast in moving, talking or other activities
small - ad. little in size or amount; few in number; not important; opposite large
smash - v. to break or be broken into small pieces by force; to hit or move with >force
smell - v. to sense through the nose; n. something sensed by the nose ("the smell of food cooking")
smoke - v. to use cigarettes or other tobacco products by burning them and breathing in the smoke; n. that which can be seen rising into the air like a cloud from something burning
smooth - ad. having a level surface; opposite rough
snow - n. soft, white pieces of frozen water that fall from the sky, usually in winter or when the air temperature is very cold
so - ad. in such a way that ("He held the flag so all could see it."); also; too ("She left early, and so did we."); very ("I am so sick."); as a result ("They were sick, so they could not come."); conj. in order that; for the purpose of ("Come early so we can discuss the plans.")
social - ad. of or about people or a group
soft - ad. not hard; easily shaped; pleasing to touch; not loud
soil - n. earth in which plants grow
soldier - n. a person in the army
solid - ad. having a hard shape with no empty spaces inside; strong; not in the form of a liquid or gas
solve - v. to find an answer; to settle
some - ad. of an amount or number or part not stated; not all
son - n. a person's male child
soon - ad. not long after the present time; quickly
sort - n. any group of people or things that are the same or are similar in some way; a kind of something
sound - n. fast-moving waves of energy that affect the ear and result in hearing; that which is heard
south - n. the direction to the right of a person facing the rising sun
space - n. the area outside the earth's atmosphere where the sun, moon, planets and stars are; the area between or inside things
speak - v. to talk; to say words with the mouth; to express one's thoughts to others and exchange ideas; to give a speech to a group
special - ad. of a different or unusual kind; not for general use; better or more important than others of the same kind
speech - n. a talk given to a group of people
speed - v. to make something go or move faster; n. the rate at which something moves or travels; the rate at which something happens or is done
spend - v. to give as payment; to use ("He spends much time studying.")
spill - v. to cause or permit liquid to flow out, usually by accident
spirit - n. the part of a human that is not physical and is connected to thoughts and emotions; the part of a person that is believed to remain alive after death
split - v. to separate into two or more parts; to divide or break into parts
sport - n. any game or activity of competition involving physical effort or skill
spread - v. to become longer or wider; to make or become widely known
spring - n. the time of the year between winter and summer
spy - v. to steal or get information secretly; n. one who watches others secretly; a person employed by a government to get secret information about another country
square - n. a flat shape having four equal sides
stab - v. to cut or push into or through with a pointed weapon
stand - v. to move into or be in a position in which only the feet are on a surface; to be in one position or place
star - n. a mass of gas that usually appears as a small light in the sky at night, but is not a planet; a famous person, usually an actor or singer
start - v. to begin; to make something begin
starve - v. to suffer or die from a lack of food
state - v. to say; to declare; n. a political part of a nation
station - n. a place of special work or purpose ("a police station"); a place where passengers get on or off trains or buses; a place for radio or television broadcasts
statue - n. a form of a human, animal or other creature usually made of stone, wood or metal
stay - v. to continue to be where one is; to remain; to not leave; to live for a time ("They stayed in New York for two years.")
steal - v. to take without permission or paying
steam - n. the gas that comes from hot water
steel - n. iron made harder and stronger by mixing it with other substances
step - v. to move by lifting one foot and placing it in a new position; n. the act of stepping; one of a series of actions designed to reach a goal
stick - v. to attach something to another thing using a substance that will hold them together; to become fixed in one position so that movement is difficult ("Something is making the door stick."); n. a thin piece of wood
still - ad. not moving ("The man was standing still."); until the present or a stated time ("Was he still there?"); even so; although ("The job was difficult, but she still wanted to do it.")
stone - n. a small piece of rock
stop - v. to prevent any more movement or action; to come or bring to an end
store - v. to keep or put away for future use; n. a place where people buy things
storm - n. violent weather, including strong winds and rain or snow
story - n. the telling or writing of an event, either real or imagined
stove - n. a heating device used for cooking
straight - ad. continuing in one direction without turns
strange - ad. unusual; not normal; not known
street - n. a road in a city, town or village
stretch - v. to extend for a distance; to pull on to make longer or wider
strike - v. to hit with force; to stop work as a way to seek better conditions, more pay or to make other demands
strong - ad. having much power; not easily broken, damaged or destroyed
structure - n. the way something is built, made or organized; a system that is formed or organized in a special way; a building
struggle - v. to try with much effort; to fight with; n. a great effort; a fight
study - v. to make an effort to gain knowledge by using the mind; to examine carefully
stupid - ad. not able to learn much; not intelligent
subject - n. the person or thing being discussed, studied or written about
submarine - n. an underwater ship
substance - n. the material of which something is made (a solid, liquid or gas)
substitute - v. to put or use in place of another; n. a person or thing put or used in place of another
subversion - n. an attempt to weaken or destroy a political system or government, usually secretly
succeed - v. to reach a goal or thing desired; to produce a planned result
such - ad. of this or that kind; of the same kind as; similar to
sudden - ad. not expected; without warning; done or carried out quickly or without preparation
suffer - v. to feel pain in the body or mind; to receive or experience hurt or sadness
sugar - n. a sweet substance made from liquids taken from plants
suggest - v. to offer or propose something to think about or consider
summer - n. the warmest time of the year, between spring and autumn
sun - n. the huge star in the sky that provides heat and light to earth
supervise - v. to direct and observe the work of others
supply - v. to give; to provide; n. the amount of something that can be given or sold to others
support - v. to carry the weight of; to hold up or in position; to agree with others and help them reach a goal; to approve
suppose - v. to believe, think or imagine ("I suppose you are right."); to expect ("It is supposed to rain tonight.")
suppress - v. to put down or to keep down by force; to prevent information from being known publicly
sure - ad. very probable; with good reason to believe; true without question
surface - n. the outer side or top of something ("The rocket landed on the surface of the moon.")
surplus - n. an amount that is more than is needed; extra; ("That country has a trade surplus. It exports more than it imports.")
surprise - v. to cause a feeling of wonder because something is not expected; n. something not expected; the feeling caused by something not expected
surrender - v. to give control of oneself or one's property to another or others; to stop fighting and admit defeat
surround - v. to form a circle around; to be in positions all around someone or something
survive - v. to remain alive during or after a dangerous situation
suspect - v. to imagine or believe that a person is guilty of something bad or illegal; n. a person believed to be guilty
suspend - v. to cause to stop for a period of time
swallow - v. to take into the stomach through the mouth
swear in - v. to put an official into office by having him or her promise to carry out the duties of that office ("The chief justice will swear in the president.")
sweet - ad. tasting pleasant, like sugar
swim - v. to move through water by making motions with the arms and legs
sympathy - n. a sharing of feelings or emotions with another person, usually feelings of sadness
system - n. a method of organizing or doing something by following rules or a plan; a group of connected things or parts working together for a common purpose or goal

T

take - v. to put a hand or hands around something and hold it, often to move it to another place; to carry something ; to seize; to capture; to begin to be in control ("The president takes office tomorrow.")
talk - v. to express thoughts in spoken words; n. a meeting for discussion
tall - ad. higher than others; opposite short
tank - n. a large container for holding liquids; a heavy military vehicle with guns
target - n. any person or object aimed at or fired at
taste - v. to sense through the mouth ("The fruit tastes sweet.")
tax - n. the money a person or business must pay to the government so the government can provide services
tea - n. a drink made from the plant of the same name
teach - v. to show how to do something; to provide knowledge; to cause to understand
team - n. a group organized for some purpose, often for sports
tear - v. to pull apart, often by force
tears - n. the fluid that comes out of the eyes while crying
technical - ad. involving machines, processes and materials in industry, transportation and communications; of or about a very special kind of subject or thing ("You need technical knowledge to understand how this system works.")
technology - n. the use of scientific knowledge and methods to produce goods and services
telephone - n. a device or system for sending sounds, especially the voice, over distances
telescope - n. a device for making objects that are far away appear closer and larger
television - n. a device that receives electronic signals and makes them into pictures and sounds; the system of sending pictures and sounds by electronic signals over a distance so others can see and hear them on a receiver
tell - v. to give information; to make known by speaking; to order; to command
temperature - n. the measurement of heat and cold
temporary - ad. lasting only a short time
tense - ad. having fear or concern; dangerous; opposite calm
term - n. a limited period of time during which someone does a job or carries out a responsibility ("He served two terms in Congress."); the conditions of an agreement that have been accepted by those involved in it
terrible - ad. very bad; causing terror or fear
territory - n. a large area of land
terror - n. extreme fear; that which causes great fear
terrorist - n. a person who carries out acts of extreme violence as a protest or a way to influence a government
test - v. to attempt to learn or prove what something is like or how it will act by studying or doing ("The scientists will test the new engine soon."); n. an attempt to learn or prove what something is like or how it will act by studying or doing ("The test of the new engine takes place today."); a group of questions or problems used to find out a person's knowledge ("The students did well on the language test.")
than - conj. connecting word used to link things that may be similar, but are not equal ("My sister is taller than I am.")
thank - v. to say that one has a good feeling toward another because that person did something kind ("I want to thank you for helping me.")
that - ad. showing the person, place or thing being spoken about ("That man is a soldier."); pro. the person, place or thing being spoken about ("The building that I saw was very large.")
the - pro. used in front of a name word to show that it is a person or thing that is known about or is being spoken about
theater - n. a place where movies are shown or plays are performed
them - pro. other people being spoken about
then - ad. at that time; existing; and so
theory - n. a possible explanation of why something exists or how something happens using experiments or ideas, but which is not yet proven ("Other scientists are debating his theory about the disappearance of dinosaurs.")
there - ad. in that place or position; to or toward that place
these - pro. of or about the people, places or things nearby that have been spoken about already
they - pro. those ones being spoken about
thick - ad. having a large distance between two opposite surfaces ("The wall is two meters thick."); having many parts close together ("The forest is very thick."); almost solid, such as a liquid that does not flow easily; opposite thin
thin - ad. having a small distance between two opposite surfaces; not fat; not wide; opposite thick
thing - n. any object
think - v. to produce thoughts; to form ideas in the mind; to consider; to believe
third - ad. coming after two others
this - pro. of or about the person, place or thing nearby that has been spoken about already
threaten - v. to warn that one will do harm or cause damage
through - prep. in at one end and out at the other; from front to back; from top to bottom; with the help of; by
throw - v. to cause to go through the air by a movement of the arm
tie - v. to join or hold together with some material; n. anything that joins or unites; links or connections ("The two nations have strong trade ties.")
time - n. that which is measured in minutes, hours, days and years; a period that can be identified in hours and minutes and is shown on a clock; a period when an event should or will take place
tired - ad. having less strength because of work or exercise; needing sleep or rest
to - prep. showing the direction of an action; showing the person or place toward which an action is directed; showing a goal or purpose
today - n. this day
together - ad. in one group; at the same time or place; in cooperation
tomorrow - n. the day after today
tonight - n. this night
too - ad. also; as well as; more than is necessary
tool - n. any instrument or device designed to help one do work
top - n. the upper edge or surface; the highest part; the cover of something
torture - v. to cause severe pain; n. the act of causing severe pain in order to harm, to punish or to get information from
total - n. the complete amount
touch - v. to put the hand or fingers on
toward - prep. in the direction of; leading to
town - n. a center where people live, larger than a village but not as large as a city
trade - v. to buy and sell or exchange products or services; n. the activity of buying, selling or exchanging products or services
tradition - n. a ceremony, activity or belief that has existed for a long time
traffic - n. the movement of people, vehicles or ships along a street, road or waterway
tragic - ad. extremely sad; terrible
train - v. to teach or learn how to do something; to prepare for an activity; n. an engine and the cars connected to it that move along a railroad
transport - v. to move goods or people from one place to another
transportation - n. the act or business of moving goods or people
trap - v. to catch or be caught by being tricked; to be unable to move or escape; n. a device used to catch animals
travel - v. to go from one place to another, usually for a long distance
treason - n. the act of fighting against one's own country or of helping its enemies
treasure - n. a large collection of money, jewels or other things of great value
treat - v. to deal with; to act toward in a special way; to try to cure
treatment - n. the act of treating; the use of medicine to try to cure or make better
treaty - n. a written agreement between two or more nations
tree - n. a very tall plant that is mostly wood, except for its leaves
trial - n. an examination in a court of a question or dispute to decide if a charge is true
tribe - n. a group of families ruled by a common chief or leader
trick - v. to cheat; to fool a person so as to get something or make him or her do something
trip - n. a movement from one place to another, usually a long distance
troop - n. a number of soldiers in a large controlled group
trouble - n. that which causes concern, fear, difficulty or problems
truce - n. a temporary halt in fighting agreed to by all sides involved
truck - n. a heavy vehicle used to carry goods
true - ad. correct; not false
trust - v. to believe that someone is honest and will not cause harm
try - v. to make an effort; to take court action against a person to decide if he or she is guilty or innocent of a crime
tube - n. a long, round structure through which liquids or gases can flow; a long, thin container in which they can be kept
turn - v. to change direction; to move into a different position; to change color, form or shape

Parts of Speech
Prefixes
Expressions
Science Words
Organs of the Body

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