- Authoratative treatise
- Authoress
- Authorship
- Auto
- Auto score
- Auto-suggestion
- Autocracy
- Autogenously
- Autolysis
- Automatic
- Automatic check
- Automaton
- Automobile
- Avocado
- Avocation
- Avoidable
- Avoidance
- Avoiding
- Avow
- Awaken
- Awakened
- Aware
- Away
- Awed
- Awkwardness
- Awning
- Axis
- Axis major
- Axle-nail
- Ayurvedic medicines
- Azymous
- Adp
- Airily
- A disciple who lodges with his preceptor
- A divine ministrel
- A dogs life
- A dry
- A false alarm
- A fiche
- A fish
- A floating voter
- A form of verse in which each line contains eight letters
- A golden parachute
- A good innings
- Abetter
- Abeyance
- Abhishekam
- Abhorrent
- Ability
- Abiogenisis
- Abjection
- Ablactation
- Ableism
- Abnegation
- Absently
- Absolute
- Aqiqah
- Absorb in
- Absorbed
- Absorbent
- Absorbing
- Abstract art
- Abstractedness
- Accent
- Accomplice
- Accompliser
- Accomplishment
- Accordance
- Accordion
- Accost
- Acquainted jobs
- Acquatic
- Acquired immunodeficiency syndrome
- Acquirer
- Acquisition
- Acquittance roll
- Acrid taste
- Acridness
- Acrimony
- Acrobat
- Acronym
- Acrophobia
- Acrostic
- Acrylic
- Act
- Act a lie
- Act of god
- Acuity
- Acute
- Acute angle
- Acutely
- Ad hominem
- Ad rem
- Ada
- Adage
- Adam
- Adamant
- Adaptable
- Adapted
- Add