- As plain as the nose
- As pleased as punch
- As sharp as a needle
- As sure as gun
- As ugly as in
- As ugly as sin
- Asafoetida
- Ascend
- Askew
- Asocial
- Asp
- Asparagus
- Aspect
- Asperity
- Aspersions
- Asphodel
- Asphyxiate
- Assamese
- Assassination
- Assaulting
- Assorted
- Assortment
- Assume
- Assure
- Astaghfirullah
- Asterik
- Asteriods
- Asterisk
- Asterism
- Asteroid
- Asthmatic
- Astigmatism
- Astonishment
- Astound
- Astral
- At a stretch
- At a tender age
- At all events
- At dead of night
- At first
- At loggerheads
- At work
- At-the-outset
- Ataraxy
- Ataxia
- Athenaeum
- Athletic
- Atmospheric air
- Atomic power
- Attentiveness
- Attenuation
- Attested
- Atticism
- Attorney
- Attractive
- Attribution
- Aural
- Aureole
- Auricular
- Aurora australis
- Auspice
- Auspicious
- Auspicious time
- Austerity
- Authenticated
- Author of atharva veda
- Authoratative treatise
- Authoress
- Autospy
- Autumnal-equinox
- Avail
- Available
- Availablity
- Avalanche
- Avaricious
- Avatar
- Avenge
- Avert
- Averting
- Avian
- Aviary
- Aviate
- Aviator
- Avidity
- Axis
- Axis major
- Axle-nail
- Ayurvedic medicines
- Azymous
- A bed of nails
- A bird
- Admass
- A bitter pill to swallow
- A brahmin who receives presents in honour of the dead
- A bunch of
- A cavity formed by folding togetherthe open palms
- A chip off the old block
- A collyrium
- A good while
- A hand-blow