- Authorized
- Autism
- Auto-typography
- Autochthons
- Autocrat
- Autograph
- Automatic dictionary
- Automatic pagination
- Automatism
- Await
- Awaiting
- Awake to
- Awake to reality
- Awareness
- Awash
- Awful
- Awkward age
- Awl
- Ax
- Axe helve
- Axiom
- As such
- Atomism
- A
- A bad patch
- A bed of thorn
- A big name
- A bird in the hand is worth two in the bush
- A bit thick
- A capital offence
- A caste title
- A cheat
- A chip of the old block
- A confirmed bachelor
- A cross-breed of male horse and female deer
- A table-land
- A tree
- A war bride
- A war veteran
- A wet nurse
- A white elephant
- A yadava
- Aaronic
- Ab ovo
- Aberrate
- Aberration
- Abettor
- Abhorence
- Abidance
- Abject
- Abjectness
- Abl
- Ablate
- Ablaze
- Ablepsy
- Ablutions
- Abm
- Abnormal
- Abnormality
- Above price
- Abracadabra
- Abracos
- Abrade
- Abrading
- Abrandant
- Abrasively
- Abrasiveness
- Abreast
- Abridged
- Abrupt
- Abruptness
- Abscond
- Absconded out
- Absconding
- Abseil
- Absence
- Absent
- Axilla
- Absurd
- Absurdism
- Absurdity
- Abundantly
- Abused
- Abutting
- Abysmal
- Ac
- Acc
- Accelerated
- Acceleration
- Accompanist
- Accord
- According as
- Accountancy
- Accountant
- Accoutre
- Accoutrement
- Accreditation
- Acetylene
- Acheron
- Achievable