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 colour

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

railway

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

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

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; to accept as true

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

relations

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

the parts of something that are left after the rest has been destroyed or taken away; a dead body ("His remains are buried in his home town")

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

rent

v

to pay money to use something (often ‘rent from’, as in "You can rent a car from a company in town"); to receive money for the use of something (often ‘rent out to’ or ‘rent to’ as in "The company in town will rent [out] cars to visitors")

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

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

respect

v

to think well of someone (or something) because of their qualities or the things they have done

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; time spent not working

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

royal

ad

like a king, concerning a king

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

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