A

to stop doing something before it is finished, or to stop following a plan, idea, etc.

abandon [verb]

different from what is normal or usual, in a way which is strange or dangerous

abnormal [adjective]

on or onto a plane, ship, bus, or train

aboard [adverb; preposition]

! a medical operation to end a pregnancy when the baby is still too small to live

abortion [noun]

used to strongly agree with someone

absolutely [adverb]

to understand and remember facts that you read or hear

absorb [verb]

an action or activity that is morally wrong or not allowed

abuse [noun]

to start to happen more quickly, or to make something start to happen more quickly

accelerate [verb]

allowed or approved of

acceptable [adjective]

when you accept something

acceptance [noun]

agreed or approved by most people

accepted [adjective]

something extra which is not necessary but is attractive or useful

accessory [noun]

praised by a lot of people

acclaimed [adjective]

to succeed in doing something good

accomplish [verb]

in the way described by a rule, law, or wish

accordance [noun]

as said by a lot of people

account [noun]

to increase in amount over a period of time, or to make something increase over a period of time

accumulate [verb]

when you say that someone has done something bad

accusation [noun]

If you are ... to something, you have experienced it often enough for it to seem normal to you.

accustomed [adjective]

to accept that something is true or exists

acknowledge [verb]

someone who you know but do not know well

acquaintance [noun]

a legal process in a court / damaged or hurt and not able to operate or play sports / something that you can do in a particular situation

action [noun]

An ... volcano could throw out rocks, fire, etc. at any time.

active [adjective]

the process or act of changing to suit a new situation

adaptation [noun]

If something is ..., it makes you want more of it so that you become addicted.

addictive [adjective]

to deal with a problem

address [verb]

the work of organizing and arranging the operation of something, such as a company

administration [noun]

relating to the organization and management of something

administrative [adjective]

someone who helps to manage an organization

administrator [noun]

having finished growing

adult [adjective]

someone whose job is to give advice about a subject

adviser [noun]

having a lot of money

affluent [adjective]

cheap enough for most people to be able to buy

affordable [adjective]

despite / used to say that something happened or was true although you did not expect it to happen or be true

after [preposition]

to have a reason not to like someone or something

against [preposition]

an international organization or government department

agency [noun]

a list of subjects that people will discuss at a meeting

agenda [noun]

angry or violent behaviour towards someone

aggression [noun]

using forceful methods and determined to succeed

aggressive [adjective]

If something happened long ..., it happened a great amount of time...

ago [adverb]

If two descriptions, statements, etc..., they are the same

agree [verb]

before the time that was planned

ahead [adjective]

money, food, or equipment that is given to help a country or group of people / in order to collect money for a group of people who need it / using something to help you / a piece of equipment that helps you to do something

aid [noun]

to help someone

aid [verb]

on television or radio

air [noun]

to make someone worried or frightened

alarm [verb]

causing worry or fear

alarming [adjective]

quick to notice and react to things around you

alert [adjective]

a warning about a possibly dangerous situation

alert [noun]

used to say that something happened or was true although you did not expect it to happen or be true / used for saying that something is true in general if you think about all its aspects / very late at night, until early morning, or almost ... the time

all [determiner; pronoun]

suddenly / used to show that you do not agree with something or that you are annoyed about something / to be ready

all [adverb]

when you say that someone has done something wrong or illegal, without proof that this is true

allegation [noun]

believed to be true, but not proved

alleged [adjective]

to give some time, money, space, etc. to be used for a particular purpose

allocate [verb]

to plan to use a particular amount of money, time, etc. for something / to make it possible for someone to do something

allow [verb]

money that you are given regularly, especially to pay for a particular thing

allowance [noun]

someone who supports you, especially when other people are against you

ally [noun]

used to emphasize that something is more impossible than another thing

alone [adjective; adverb]

next to someone or something / together with someone

alongside [adverb; preposition]

a change, or the process of changing something

alteration [noun]

one out of every two days, weeks, years, etc.

alternate [adjective]

If two things ..., one thing happens, then the other thing happens, then the first thing happens again, etc.

alternate [verb]