- auxiliary
- auxiliary bishop
- avail
- availability
- avid
- aviform
- avoidable
- avow
- awake to
- awry
- ax
- axe
- axe helve
- axiomatic
- axis major
- axis neutral
- abase
- ability
- accrue
- accumulate
- adaptable
- addict
- adieu
- adolescence
- advanced
- affection
- affect
- ailment
- alchemy
- Airily
- airport
- alcove
- allay
- allege
- allocation
- almanac
- alternate
- ambivalent
- amenable
- a great deal, a good deal
- against one's better judgement
- a hair's breadth
- a shot
- accuser
- amiableness
- agony column
- an item in phyrotechnics
- abatement of sickness
- acquittance roll
- against the hair
- above criticism
- absolute control
- ailurophobia
- acrylic
- ailurophile
- activator
- add time
- amino acid
- an ignoramus
- alternating current
- adhered
- abetment
- an even chance
- agonising
- airlock
- amberite
- acquaintanceship
- adulterress
- ammonite stone
- abm
- allotropism
- a bed of thorn
- agamas
- a good second
- algebric
- a wandering jew
- an ornament for the neck
- an opening flower
- americium
- admiralty
- a page in history
- agnomen
- afflictive
- air speed
- aide-de-camp
- adhatoda vasica
- altimeter
- advised
- airshaft
- after-taste
- a mad dash
- agnus castus
- a hard life
- a hard nut to crack
- aleatory
- a la
- affective
- abba
- andaman island
- androcentricity