- Attune
- Aureus
- Auricle
- Auspices
- Autarchy
- Authentically
- Authorative person
- Authorial
- Authorise
- Authoritatively
- Authority
- Authorization
- Authorized
- Autism
- Auto-typography
- Autochthons
- Autocrat
- Autograph
- Automatic dictionary
- Automatic pagination
- Automatism
- As such
- Atomism
- Alienist
- Almirah
- Amen!
- Antiquarianism
- Arm
- Atdm
- A drop in the ocean
- A fair treat
- A feather in one's cap
- A fellow believer
- A few
- A fight to the finish
- A fighting chance
- A figure of squaresused in holy spells
- A fly on the wall
- A gem
- A good deal
- A good or great many
- A hen party
- A herb with the smell of camphor
- A historical
- A hollow laughter
- A la
- A labour of love
- A little only
- A planetary junction in which the moon stands in the focus of the sun
- A poison
- A regular life
- A rolling stone gathers no moss
- A second opinion
- A small cup
- A small play
- A smart move
- A sore thumb
- Abacus
- Abandoning
- Abase
- Abashing
- Abashment
- Abatement of sickness
- Abbreviate
- Abc
- Abcess
- Abdicate
- Abdication
- Abduction
- Abed
- Abend
- Abode
- Abolition
- Abominable
- Aborigines
- Abort
- Aborted
- About us
- Above oneself
- Axilla
- Absurd
- Absurdism
- Absurdity
- Abundantly
- Abused
- Abutting
- Abysmal
- Ac
- Acc
- Accelerated
- Acceleration
- Accompanist
- Accord
- According as
- Accountancy
- Accountant
- Accoutre
- Accoutrement
- Accreditation
- Acetylene