- Ascii
- Ascription
- Aseity
- Asepsis
- Ash
- Ash wednesday
- Ash-gourd
- Ask for a blank cheque
- Ask for the moon
- Assembling
- Assertion
- Assessment
- Assets
- Assignation
- Assignee
- Assimilation
- Assist in
- Associates
- Association
- At a stroke
- At all
- At any cost
- At any moment
- At every turn
- At first light
- At first sight
- At great length
- At least
- At most
- At night
- At odds
- At this rate
- At time
- At war
- Atavism
- Ate
- Atheist
- Atlas
- Atoll
- Atomic energy
- Attendants
- Attended by
- Attendees
- Attender
- Attested milk
- Attire
- Attorneys
- Attract
- Attraction
- Attune
- Aureus
- Auricle
- Auspices
- Autarchy
- Authentically
- Authorative person
- Authorial
- Authorise
- Await
- Awaiting
- Awake to
- Awake to reality
- Awareness
- Awash
- Awful
- Awkward age
- Awl
- Ax
- Axe helve
- Axiom
- Altaltissimo
- Ark
- Astron
- Ataxia, ataxia
- A dirty trick
- A divine bird born of aruna and syeni
- A dog's death
- A figure of speech in which an indirect theme adduces to the direct
- A flower tree
- A forestation
- A founding father
- A fractuary
- A friend in need is a friend indeed
- A gamogenesis
- A good number of
- A good or great while
- A good second
- A good sort
- A hard life
- A herb
- A herb conceived as being capable of bringing the dead to life
- A large number
- A late hour
- A long face
- A long gasp
- A long time
- A magnetic personality
- A man of substance
- A man of the people
- A man ofwords