- Attained
- Attaining
- Attainment
- Attempt on the life of
- Attendance
- Attendance register
- Attends
- Attention
- Attention deficit disorder
- Attentively
- Attenuate
- Attest
- Attic
- Attire abode
- Attirement
- Attitude
- Attracted
- Attracting
- Attributable
- Attribute
- Attributes
- Attrition
- Atypical
- Auntie
- Aura
- Aurora borealis
- Auscultation
- Auspicious function
- Auspicious sound
- Auspicious woman
- Austral
- Autarky
- Authentic
- Authenticity
- Author
- Authoritarian
- Auxiliary
- Avant-garde
- Avaricious person
- Avascular
- Avengeful
- Aversion
- Aversion therapy
- Avian influenza
- Ayacut
- Ayatollah
- Aye
- Ayurvedic treatment
- Ayyappa
- Azimuth
- Azotemia
- Absolutist
- Aero
- 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 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
- Act upon
- Actinomorphy
- Action
- Actionable
- Actionable claim
- Activator
- Active
- Activist
- Activities
- Actors
- Actove movie
- Adherents
- Adhesion
- Adhesive
- Adios
- Adisehas
- Adisesha
- Adjectival
- Adjective
- Adjoining
- Adjournment
- Adjudicatior
- Adjure
- Adjustable
- Adjustment
- Adored
- Adorned