- A page in history
- A patent lie
- A raw deal
- A real man
- A sacred poetical work
- A sadder and wiser man
- A sealed book
- A short tripod
- A small drum
- A small fry
- Abaft
- Abalienate
- Abasement
- Abatement
- Abatement of rain
- Abating
- Abbess
- Abduct
- Abe
- Abecedarian
- Abrachia
- Abraham
- Abrasive
- Abridgement
- Abroad
- Abrogate
- Abrogation
- abrus precatorius
- Abscess
- Abscission
- Absurdly
- Abundant
- Abuse
- Abusive
- Abyss
- Abyssal
- Acacia adoratissima
- Acacia intsia
- Academia
- Academy
- Acarpous
- Accede
- Accelerate
- Accelerator
- Accompany
- Accomplishing
- According
- According to
- According to ones lights
- According to schedule
- Accoucheuse
- Account
- Account for
- Accountability
- Accountable
- Accounting
- Accounts
- Accoutrements
- Accredit
- Achievement quotient
- Achilles heel
- Aching
- Achy
- Acid test
- Acidity
- Acknowledgement
- Acknowledgment
- Acolyte
- Acoustics
- Acquaintances
- Act up to
- Acting
- Actinic
- Actinotherapy
- Action plan
- Actions
- Actions speak louder than words
- Activation
- Active and passive voices
- Activex
- Add to
- Addenda
- Additionally
- Address size
- Adenoids
- Adept
- Adequacy
- Administratively
- Administrator
- Admirably
- Admiralty
- Admire for
- Admired
- Admissible
- Admittedly
- Admix
- Admonish
- Adolescence
- Adopted
- Adorable