- A lunar day
- A man easily provoked
- A man of letters
- A musical drm
- A peak of the western ghats
- A perfume
- Aberrational
- Abetment
- Abhorrence
- Abide
- Abide way
- Abiding
- Abigail
- Abjudication
- Abjure
- Ablative case
- Ablest
- Ablution
- Ablutophobia
- Abnegate
- Aboard
- Abode of ascetics
- Abodes
- Abolish
- Aboriginal hunters tribe
- Aborigine
- Abortion
- Abound in
- Abounds
- About
- Above par
- Absentation from mention
- Absolute majority
- Absolute ruler
- Absolution
- Absolve
- Absorber
- Abstain
- Abstention
- Abstract
- Accentuate
- Accessed
- Accidental
- Accidentality
- Acclamatory shouting
- Acclimatization
- Accommodation
- Accompaniments
- Accomplish
- Accomplished
- Accomplishment quotient
- Accordant
- Accorded
- Accordingly
- Accountrements
- Accounts payable
- Accounts receivable
- Accoustics
- Acetic acid
- Ache
- Acid lemon
- Acidophilus
- Acidulous
- Acknowledge
- Acknowledged
- Acm
- Acne
- Acorn
- Acoustic
- Act of peace
- Action meter
- Action-packed
- Activate
- Active server pages
- Active service
- Active voice
- Actively
- Activeness
- Activewear
- Actress
- Actual
- Actualise
- Actually
- Acumen
- Acute pain
- Ad-lib
- Adagio
- Adams apple
- Adapt to
- Adaptableness
- Adaptation
- Adc
- Adhere
- Adhering
- Adjacent
- Adjoin
- Adjudge
- Adjudication
- Adjudicator
- Adjunct