accessible
ADJECTIVE 1 easy to reach or to see The beach was accessible by a narrow path.
2 Books that are accessible are easy to understand.
accident accidents
NOUN 1 something that happens suddenly or unexpectedly, causing people to be hurt or killed
PHRASE 2 Something that happens by accident has not been planned. We met by accident in the supermarket.
accidental
ADJECTIVE Something that is accidental has not been planned.
accidentally ADVERB
accommodation
NOUN a place where you can live, work or sleep
accompany accompanies, accompanying, accompanied
VERB 1 If you accompany someone, you go with them.
2 If you accompany a singer, you play an instrument while they sing.
accomplice accomplices
NOUN a person who helps someone else to commit a crime
accomplish accomplishes, accomplishing, accomplished
VERB If you accomplish something, you succeed in doing it.
according to
PREPOSITION If something is true according to a particular person, that person says that it is true. According to my grandad, that castle is haunted.
account accounts, accounting, accounted
NOUN 1 a written or spoken report of something
2 money that you keep at a bank
PHRASE 3 On account of means because of. He couldnt play football, on account of a sore throat.
VERB 4 To account for something is to explain it. The bad weather accounts for the cancellation of the barbecue.
accountant accountants
NOUN someone whose job is to look after the financial affairs of people and companies
accumulate accumulates, accumulating, accumulated
VERB If things accumulate, or if you accumulate things, they collect over a period of time. While they were away, a large pile of letters accumulated on the doormat.
accumulation NOUN
accurate
ADJECTIVE absolutely correct
accuracy NOUN
accuse accuses, accusing, accused
VERB If you accuse someone of doing something wrong, you say they have done it.
accusation NOUN
ace aces
NOUN 1 In a pack of cards, the ace is a card with a single symbol on it.
2 In tennis, an ace is a serve that the other player is unable to return.
ADJECTIVE 3 INFORMAL good or skilful an ace squash player
ache aches, aching, ached
NOUN 1 a continuous, dull pain
VERB 2 If a part of your body aches, you feel a continuous, dull pain there.
achieve achieves, achieving, achieved
VERB If you achieve something, you are successful at doing it or at making it happen.
The i comes before the e in achieve.
acid acids
NOUN 1 a chemical substance. Strong acids can damage skin, cloth and metal, for example sulphuric acid. Other acids, such as those found in citrus fruit and vinegar, are harmless.
ANTONYM: alkali
ADJECTIVE 2 If something has an acid taste, it tastes sharp or bitter.
ANTONYM: alkaline
[from Latin acidus meaning sour]
acid rain
NOUN rain that has been polluted by the burning of fossil fuels, such as coal and oil
acknowledge acknowledges, acknowledging, acknowledged
VERB 1 If you acknowledge a fact or a situation, you admit that it is true.
2 If you acknowledge someone, you show that you have seen and recognized them, by waving or saying hello.
3 If you acknowledge a message or a letter, you tell the person who sent it that you have received it.
acne
NOUN a skin disease that causes spots on the face and neck. Acne is common among teenagers.
acorn acorns
NOUN a nut that grows on oak trees
acquaintance acquaintances
NOUN someone you know slightly but not well
acre acres
NOUN a unit for measuring land. One acre is equal to 4840 square yards or about 4047 square metres.
acrobat acrobats
NOUN an entertainer who performs difficult gymnastic acts
[from Greek akrobates meaning someone who walks on tiptoe]
acrobatic ADJECTIVE
acrobatics PLURAL NOUN
acronym acronyms
NOUN a word made up of the initial letters of a phrase NATO is an acronym, and stands for North Atlantic Treaty Organization.
across
PREPOSITION OR ADVERB 1 If you go across a place, you go from one side of it to the other. We walked across Hyde Park.
2 Something that is situated across a road or river is on the other side of it.
act acts, acting, acted
VERB 1 If you act, you do something. We have to act quickly in an emergency.
2 If you act in a particular way, you behave in that way. Youre acting like a baby.
3 If you act in a play or film, you play a role in it.
NOUN 4 a single thing someone does The rescue was a brave act.
5 An Act of Parliament is a law passed by the government.
6 Stage plays are divided into parts called acts.
action actions
NOUN 1 something you do for a particular purpose
2 a physical movement, such as jumping
active
ADJECTIVE 1 Someone who is active moves around a lot or does a lot of things.
2 In grammar the active, or the active voice, is the form of the verb in which the subject of the sentence is the person or thing doing the action, rather than having it done to them. For example, the sentence The dog bit Ben is in the active voice. In the passive voice the subject is acted upon: Ben was bitten by the dog.
ANTONYM: passive
activity activities
NOUN 1 a situation in which a lot of things are happening at the same time There was a great deal of activity in the hall as we got ready for the school play.
2 something you do for pleasure, such as gymnastics or music
actor actors
NOUN a man or woman whose job is performing in plays or films
actress actresses
actress actresses
NOUN a woman whose profession is acting
actual
ADJECTIVE real, rather than imaginary or guessed at You guessed I was eleven my actual age is twelve.
actually ADVERB
acute
ADJECTIVE 1 severe or intense She had an acute pain in her arm.
2 In mathematics, an acute angle measures less than 90 degrees.
3 Someone who is acute is intelligent.
AD
ADJECTIVE You use AD in dates to show the number of years after the birth of Jesus Christ.
[an abbreviation of the Latin Anno Domini meaning the year of Our Lord]
adapt adapts, adapting, adapted
VERB 1 If you adapt to something, you get used to it.
2 If you adapt something, you change it so that it can be used in a new way.
adaptable
ADJECTIVE If you are adaptable, you change easily in a new situation or to suit new circumstances.
add adds, adding, added
VERB 1 If you add something to a number of things, you put it with those things. Each girl added more wood to the pile.
2 If you add numbers together, or add them up, you work out the total. Two and three added together are five (2 + 3 = 5).
adder adders
NOUN a small, poisonous snake
addiction addictions
NOUN If you have an addiction to something, you cannot stop doing it or wanting it.
addition additions
NOUN 1 the process of adding two or more numbers together
2 something that is added to something else The addition of sugar would improve the taste of these plums.
additional
ADJECTIVE extra or more
additive additives
NOUN something that is added to something else, such as food
address addresses, addressing, addressed
NOUN 1 Your address is the number of the house where you live, together with the name of the street and the town or village.
VERB 2 If someone addresses a letter to you, they write your name and address on it.
3 If you address a group of people, you speak to them formally.
There are two ds and two ss in address.
adenoids
PLURAL NOUN small lumps of flesh at the back of the throat
adequate
ADJECTIVE just enough for what is needed
SYNONYMS: enough, satisfactory, sufficient
adhesive adhesives
NOUN 1 a substance used to stick things together, such as glue
ADJECTIVE 2 If something is adhesive, it sticks to other things.
adjective adjectives
NOUN a word that adds to the description of a noun. For example, large and old are both adjectives.
adjust adjusts, adjusting, adjusted
VERB 1 If you adjust something, you change its position or alter it in some other way. She adjusted her pillow to make herself more comfortable.
2 If you adjust to a new situation, you get used to it.
adjustment NOUN
administration administrations
NOUN the work of managing and supervising an organization
admiral admirals
NOUN a senior officer in the navy
admire admires, admiring, admired
VERB If you admire someone or something, you respect and approve of them.
admirer NOUN
admission admissions
NOUN 1 If you are allowed admission to a place, you may go into it.
2 If you make an admission, you confess to something or agree that it is true.
admit admits, admitting, admitted
VERB 1 If you admit something, you agree that it is true.
2 If you admit to something, you agree that you did something you shouldnt have done.
3 To admit someone or something to a place is to allow them to enter it.
admittance
NOUN the right to enter somewhere There will be no admittance to the party after eight oclock.
adolescent adolescents
NOUN a young person who is no longer a child, but is not yet an adult
[from Latin adolescere meaning to grow up]
adolescence NOUN
adopt adopts, adopting, adopted
VERB If someone adopts a child, they take them into their family as their son or daughter by a legal process.
[from Latin adoptare meaning to choose for oneself]
adorable
ADJECTIVE loveable and attractive
adore adores, adoring, adored
VERB If you adore someone, you feel deep love and admiration for them.
adoration NOUN
adult adults
NOUN a mature and fully developed person or animal
advance advances, advancing, advanced
VERB 1 To advance is to move forward.
NOUN 2 An advance is progress in something. There have been many scientific advances in the past century.
PHRASE 3 If you do something in advance of something, you do it beforehand. We booked our holiday well in advance.
advanced
ADJECTIVE If something is advanced, it is at a high level, or ahead in development or progress. The children in the top group do advanced maths exercises.
advantage advantages
NOUN 1 a benefit, or something that puts you in a better position The advantage of e-mail is that it is quicker than the post.
PHRASE 2 If you take advantage of someone, you treat them unfairly for your own benefit.
3 If you take advantage of something, you make use of it.
adventure adventures
NOUN something that is exciting, and perhaps even dangerous
adverb adverbs
NOUN a word that tells you how, when, where or why something happens or something is done. For example, she walked slowly, he came yesterday, they live here.
[from Latin adverbium meaning added word]