NOUN 1 Authority is a quality that someone has that makes people take notice of what they say.
NOUN 2 The authorities are people like the police who have a lot of power.
autograph autographs NOUN
An autograph is the signature of a famous person.
automatic ADJECTIVE
An automatic machine is one that can do things on its own.
automatically ADVERB
autumn autumns NOUN
Autumn is the season between summer and winter. The weather cools and many trees lose their leaves.
available ADJECTIVE
If something is available, you can get it. Tickets are available now.
avalanche avalanches NOUN
An avalanche is a huge mass of snow and ice that falls down a mountain.
avenue avenues NOUN
An avenue is a wide road with trees on either side.
average averages
NOUN 1 An average is a result obtained by adding several amounts together and then dividing the total by the number of different amounts. If four children have a total of 36 sweets, the average is nine sweets per child.
ADJECTIVE 2 If something is average, it is the standard or usual thing.
avoid avoids, avoiding, avoided VERB
If you avoid someone or something, you keep away from them.
awake ADJECTIVE
If you are awake, you are not sleeping.
award awards NOUN
An award is a prize that you are given for doing something well.
aware ADJECTIVE
If you are aware of something, you know about it.
away
ADVERB 1 If you move away from somewhere, you move so that you are further from that place.
ADVERB 2 If you are away from somewhere, you are not in that place. Katherine is away from school today.
awful ADJECTIVE
Something awful is very unpleasant or bad.
awkward
ADJECTIVE 1 If something is awkward, it is difficult to do or use.
ADJECTIVE 2 If people are awkward, they move in a clumsy way.
axe axes NOUN
An axe is a tool with a long handle and a heavy sharp blade at one end. It is used for chopping wood.
axis axes
NOUN 1 An axis is an imaginary line through the centre of something, around which it moves.
NOUN 2 An axis is also one of the two sides of a graph. A graph has a horizontal axis and a vertical axis.
Bb (#ulink_d048f0e9-1a1f-5fc6-8c35-4d8176b9b23f)
baby babies NOUN
A baby is a very young child.
back backs
NOUN 1 The back of something is the part opposite the front.
ADVERB 2 If you go back to a place, you go somewhere you have been before.
NOUN 3 Your back is the part of your body which is behind you, from your neck to the top of your legs.
NOUN 4 The back of an animal is the part on top, between its neck and the beginning of its tail.
back to front PHRASE If you have something on back to front, you are wearing it the wrong way round.
background backgrounds NOUN
The background of a picture is everything behind the main part.