against
PREPOSITION 1 touching and resting on • He leaned the ladder against the wall.
2 in opposition to • France played against England.
age ages, ageing or aging, aged
NOUN 1 The age of something or someone is the number of years they have lived or existed.
2 a particular period in history • the Iron Age
PLURAL NOUN 3 INFORMAL Ages means a very long time. • He’s been talking for ages.
VERB 4 To age is to grow old or to appear older.
Ageing and aging are both correct spellings.
agency agencies
NOUN an organization or business that provides special services • detective agency • advertising agency
agenda agendas
NOUN a list of items to be discussed at a meeting
agent agents
NOUN 1 someone who does business or arranges things for other people • a travel agent
2 someone who works for their country’s secret service
aggravate aggravates, aggravating, aggravated
VERB 1 If you aggravate something, you make it worse.
2 INFORMAL If you aggravate someone, you annoy them.
aggravating ADJECTIVE aggravation NOUN
aggressive
ADJECTIVE full of hostility and violence • Some breeds of dog are more aggressive than others.
SYNONYMS: belligerent, hostile
agile
ADJECTIVE able to move quickly and easily • He is as agile as a cat.
agilely ADVERB agility NOUN
agitated
ADJECTIVE worried and anxious
agitation NOUN
ago
ADVERB in the past • She bought her flat three years ago.
agony
NOUN very great physical or mental pain
SYNONYMS: suffering, torment
agree agrees, agreeing, agreed
VERB 1 If you agree with someone, you have the same opinion as they do.
2 If you agree to do something, you say you will do it.
agreeable
ADJECTIVE 1 pleasant or enjoyable
2 If you are agreeable to something, you are willing to allow it or to do it.
agreeably ADVERB
agreement agreements
NOUN If you reach an agreement with one or more people, you make a decision with them or come to an arrangement with them.
agriculture
NOUN farming
ahead
ADVERB 1 in front • He looked ahead as he cycled down the road.
2 more advanced than someone or something else • Some countries are ahead of others in space travel.
3 in the future • I can’t think that far ahead.
aid aids