- aether
- adductor
- asphyxiate
- as it were
- aerated
- absolute zero
- aniline
- animadvert
- arabia
- at intervals
- at the double
- aerology
- acanthus
- answer to
- as for
- adroit
- accumulative
- advice
- alone
- aneurysm
- arteriosclerosis
- achromatic
- advantageous
- Apis mellifera
- achievement
- amaze
- avocation
- acting
- abide
- anticipate
- accommodate
- accept
- administer
- acquisition
- answer
- anticipation
- art
- assert
- arrange
- allocate
- apportion
- acquaint
- advantage
- add
- allow
- accomplish
- achieve
- associate
- auberge
- admit