- Air-conditioning
- Air-conditioned
- Air-ship
- Air-tight
- Accosting
- Accreted
- Appointments
- Alarms
- Albuminous
- Aquaculture
- Ack-ack
- Auto-suggestion
- Avant-garde
- Alighting
- Arch-enemy
- Affianced
- Acrobatic feat
- Acted
- Actinism
- Avian
- Argosy
- All-around
- Argued
- Addle-head
- All-embracing
- Alleviating
- All-night
- All-in
- All-in-one
- Addresses
- All-knowing
- Arraying
- All-round
- All-purpose
- All-time
- Almond-shaped
- Almond-eyed
- Adit
- Adjuncts
- Also-ran
- Altitudinal
- Ascribed
- Asphaltic
- Asserted
- Assessable
- Ambulate
- Advising
- Amethystine
- Assonant
- Afro-asian