- aspen
- aspersions
- asphalt
- asphyxiate
- aspic
- aspidistra
- aspirate
- aspiration
- aspire
- aspirin
- aspiring
- ass
- assail
- assailant
- assassin
- assassinate
- assassination
- assault
- assault course
- assemble
- assembler language
- assembly
- assembly language
- assembly line
- assent
- assert
- assertion
- assertive
- assess
- assessment
- assessor
- asset
- asset-stripping
- assiduous
- assiduously
- assign
- assignation
- assignment
- assimilate
- assimilation
- assist
- assistance
- assistant
- assistant referee
- associate
- association
- assonance
- assorted
- assortment
- Asst.
- assuage
- assume
- assumed name
- assuming
- assumption
- assurance
- assure
- assured
- AST
- asterisk
- astern
- asteroid
- asthma
- asthmatic
- astigmatism
- astonish
- astonished
- astonishing
- astonishment
- astound
- astounded
- astounding
- astrakhan
- astray
- astride
- astringent
- astrologer
- astrological
- astrologist
- astrology
- astronaut
- astronomer
- astronomical
- astronomy
- astrophysics
- astute
- asunder
- ASV
- asylum
- asymmetrical
- at
- ATC
- ate
- atheism
- atheist
- Athenian
- Athens
- athlete
- athlete's foot
- athletic
- Atlantic
- Atlantis
- Atlas
- atlas
- ATM
- atm.
- atmosphere
- atmospheric
- atoll
- atom
- atom bomb
- atomic
- atomic bomb
- atomic energy
- atomic number
- atomizer
- atone
- atonement
- ATP
- atrocious
- atrocity
- attach
- attaché
- attaché case
- attached
- attachment
- attack
- attacker
- attain
- attainment
- attempt
- attend
- attendance
- attendant
- attention
- attentive
- attentively
- attenuate
- attest
- attic
- attire
- attitude
- attn
- attorney
- attorney general
- attract
- attraction
- attractive
- attractively
- attributable
- attribute
- attribution
- attrition
- attuned
- Atty. Gen.
- ATV
- atypical
- atypically
- au fait
- au pair
- aubergine
- auburn
- auction
- auctioneer
- audacious
- audacity
- audible
- audience
- audio
- audio frequency
- audiotyping
- audiotypist
- audiovisual
- audit
- audition
- auditor
- auditorium
- Aug.
- augment
- augur
- august
- August
- Auld Lang Syne
- aunt
- auntie
- aura
- aural
- aurally
- auspices
- auspicious
- Aussie
- austere
- austerity
- austerity measures
- Australasia
- Australia
- Australian
- Austria
- Austrian
- AUT