- a penny for your thoughts
- abbey
- accompaniment
- accredited
- acid
- accurate
- achieve
- acrimony
- achilles' heel
- acknowledge
- acquainted
- acquit
- acrobatics
- act
- addiction
- action
- acumen
- acute
- acutely
- adequate
- adaptation
- add up
- addendum
- addicted
- addled
- address
- adherent
- adjoin
- adjoining
- adjudication
- adjustment
- admirable
- adroit
- adorn
- adornment
- advance
- advise
- advisory
- affair
- affect
- affecting
- affirmative
- afflict
- afloat
- afoot
- afraid
- after
- aged
- agenda
- agony
- agitate
- agreeable
- air
- airless
- airy-fairy
- aisle
- alert
- alibi
- alight
- allegedly
- allergic
- alliance
- allude
- aloft
- aloud
- along with
- ambitious
- amiss
- ambiguous
- ambush
- amnesty
- anchorage
- amount
- amplitude
- ample
- amputate
- analogy
- amusement
- analysis
- anarchic
- anarchist
- ancestor
- arch
- anchorite
- a king's ransom
- alkali
- abulia
- airpower
- aircraft carrier
- ahead of one's time, ahead of its time
- aha
- adulteress
- anacardium occidentale
- a dirty trick
- analyze
- admire for
- air-cooled
- a signal achievement
- above par
- address book