- Arctic pole
- Ardent desire
- Ardent spirits
- Ardently
- Area
- Areca
- Areca leaves
- Areca palm
- Arecanut palm
- Arete
- Argot
- Argument
- Argumentative
- Argy-bargy
- Armoured soldiers
- Armourer
- Armpit
- Army comprising elephants
- Aroint
- Around
- Arranged
- Arranging
- Arrant
- Array of clouds
- Arrears
- Arresting
- Arrival
- Arriving
- Articulate
- Artificer
- Artificial insemination
- Artificiality
- Artistically
- Artistry
- Arts and crafts
- As
- As a first step
- As a man
- As proud as a peacock
- As regards
- As right as rain
- As safe as houses
- As soon as
- As soon as possible
- As the case may be
- As the crow flies
- As thin as a lath
- As usual
- Asafetida
- Asap
- Ascendancy
- Asphalt
- Asphyxia
- Asphyxiator
- Aspirate
- Aspiration
- Aspire
- Asr
- Ass
- Assailant
- Assassin
- Assort
- Assuage
- Assumed
- Assumed name
- Assuming
- Assumption
- Assylum
- Astadyayi
- Asthma
- Astir
- Astral projection
- At this time of day
- At times
- At your service
- Atelier
- Atharvaveda
- Athena
- Atherosclerosis
- Athiest
- Athirst
- Athlete
- Athletic exercise
- Athletics
- Athma
- Atmolysis
- Atmospheric pressure
- Au revoir
- Auburn
- Audacity
- Audience hall
- Auditorium
- Auspiciousness
- Auger
- Augment
- Augural
- Auhenticating
- Authoritative dicta
- Authorities
- Authorize