Meaning to, toward, in, or near.

The final sound of this prefix often changes (assimilates) to match the beginning sound of the base/word.

adacafagal
adapt
addict
address
adhere
adjacent
adjective
adjunct
administer
admire
admit
admonish
adopt
advance
advantage
advent
adverb
adverse
advertise
advice
advise
accede
accelerate
accent
accept
access
accident
acclaim
accolade
accommodate
accompany
accomplice
accomplish
accord
accost
account
accrete
accrue
accumulate
accurate
accuse
accustom
acknowledge
acquaint
acquiesce
acquire
acquit
affair
affect
affidavit
affiliate
affinity
affirm
affix
afflict
affluent
afford
affront
agglomerate
agglutinate
aggrandise (US aggrandize)
aggravate
aggregate
aggress
aggrieve
allege
allegiance
allegory
allergy
alliterate
allocate
allot
allow
alloy
allude
allure
allusion
alluvium
anaparasat
annex
annihilate
annotate
announce
annul
appal (US appall)
appeal
appear
append
appetite
applaud
apply
appoint
appraise
approach
apprise
approve
arraign
arrange
array
arrest
arrive
arrogant
assail
assault
assent
assess
assert
asset
assign
assist
assort
assuage
assume
assure
attach
attain
attempt
attend
attest
attire
attract