- assembly point
- assembly room
- assemblyman
- assemblywoman
- assent
- assentor
- assert
- assertion
- assertive
- assertively
- assertiveness
- assertiveness training
- assess
- assessable
- assessment
- assessor
- asset
- asset-stripper
- asset-stripping
- asseverate
- asseveration
- asshole
- assibilate
- assiduity
- assiduous
- assiduously
- assign
- assignable
- assignation
- assignee
- assignment
- assignor
- assimilate
- assimilation
- assist
- assistance
- assistance dog
- assistant
- assistant referee
- assistantship
- assisted area
- assisted suicide
- assize
- ass-kisser
- assoc
- associate
- associate professor
- associated
- association
- Association football
- associative
- assonance
- assort
- assorted
- assortment
- asst
- assuage
- assume
- assumed
- assuming
- assumption
- Assumption Day
- assurance
- assure
- assured
- assuredly
- AST
- astable
- astatic
- astatine
- aster
- asterisk
- asterism
- astern
- asteroid
- asthenia
- asthenosphere
- asthma
- asthmatic
- astigmatic
- astigmatism
- astir
- ASTMS
- astonish
- astonished
- astonishing
- astonishingly
- astonishment
- astound
- astounded
- astounding
- astoundingly
- astral
- astray
- astride
- astringence
- astringent
- astrolabe
- astrologer
- astrological
- astrologist
- astrology
- astronaut
- astronautical
- astronautics
- astronomer
- astronomical
- astronomically
- astronomy
- astrophysicist
- astrophysics
- Astroturf
- astute
- astutely
- astuteness
- asunder
- asylee
- asylum
- asylum-seeker
- asymmetrical
- asymmetry
- asymptomatic
- asynchronous
- asyndetic
- at
- at sign
- atavism
- atavistic
- ataxia
- ataxic
- ATB
- ATC
- atelier
- atheism
- atheist
- atheistic
- Athenian
- Athens
- athirst
- athlete
- athlete's foot
- athletic
- athletics
- at-home
- athwart
- atishoo
- Atlantic
- Atlantis
- atlas
- Atlas
- atm.
- ATM
- atmosphere
- atmospheric
- atmospherics
- atoll
- atom
- atom bomb
- atomic
- atomic clock
- atomic cocktail
- atomic energy
- atomic heat
- atomic mass
- atomic number
- atomic pile
- atomic power
- atomic reactor
- atomic structure
- atomic volume
- atomic weight
- atomism
- atomize
- atomizer
- atonal
- atonality
- atone
- atonement
- atonic
- atony
- atop
- at-risk
- atrium
- atrocious
- atrociously
- atrocity
- atrophy
- attaboy
- attach
- attaché
- attaché case
- attached
- attachment
- attack
- attack dog
- attacker
- attagirl
- attain
- attainable
- attainment