- act cool
- act correctly
- act crazy
- act curtain
- act drop
- act fool
- act for
- act god
- act in place of
- act in response
- act jointly
- act like
- act like a wet blanket
- act malfunction
- act misbehave
- act of courage
- act of courtesy
- act of God
- act of grace
- act of trusting
- act on
- act one's age
- act out
- act part
- act reciprocally
- act the fool
- act the part
- act the part of
- act up
- act up (malfunction)
- act up (misbehave)
- act upon
- act with
- act with decorum
- act with regard to
- act-alike
- act-god
- acta
- acted
- acted on
- acted part
- actify
- acting
- acting as
- acting company
- acting device
- acting for
- acting on
- acting part
- acting up
- acting ups
- actinic
- actinism
- actinometer
- action
- action capability
- action for a cause exhibit
- action painting
- action towards
- actionable
- actioned
- actioning
- actions
- activate
- activated
- activating
- activation
- activation energy
- activations
- activator
- active
- active capital
- active cell
- active communications satellite
- active duty
- active duty for training
- active forces
- active person
- active service
- actively
- activeness
- activewear
- activism
- activist
- activities
- activity
- activize
- actor
- actors
- actress
- actresses
- acts
- acts part
- actual
- actual time
- actuality
- actualization
- actualize
- actualized
- actually
- actualness
- actuals
- actuarial calculation
- actuary
- actuate
- actuation
- acuate
- acuity
- aculeate
- acumen
- acuminate
- acumination
- acuminous
- acute
- acute alcoholism
- acute mountain sickness
- acute myocardial infarction
- acute pain
- acute rhinitis
- acute sight
- acute viral nasopharyngitis
- acutely
- acuteness
- ACV
- acvs
- ad
- ad blitz
- ad campaign
- ad hoc
- ad hominem
- ad infinitum
- ad infinitums
- ad interim
- ad lib
- ad libbings
- ad libitum
- ad nauseam
- ad nauseum
- ad rem
- ad val
- ad valorem
- ad-hoc
- ad-infinitum
- ad-lib
- ad-libbing
- ad-libbings
- adage
- adam ale
- adam ales
- adam apple
- adam apples
- Adam's ale
- adam's ales
- Adam's apple
- adam's apples
- adamancy
- adamant
- adamantine
- adamantly
- adams ale
- adams ales
- adams apple
- adams apples
- adapt
- adaptability
- adaptable
- adaptation
- adaptations
- adapted
- adapted to
- adapter
- adapting
- adaptings
- adaption
- adaptive
- aday
- adays
- ADC
- adcs
- add
- add bells and whistles
- add finishing touches
- add fuel
- add fuel to fire
- add fuel to the fire
- add insult injury
- add insult to injury
- add on
- add one's name to
- add sugar
- add sweetening
- add to
- add to payroll
- add up
- add up to
- add zing
- add zip
- add-on
- added
- added feature
- added features
- added on
- added to
- addendum
- adder
- addict
- addicted
- addictedness
- addicting
- addiction
- addictive
- adding
- adding machine
- adding on
- adding to
- adding tos
- adding up to
- addings
- addition
- additional
- additional benefit
- additional charge
- additional compensation
- additional materiel
- additionally
- additionals
- additions
- additive
- additives
- additory
- addle
- addle-brained
- addle-headed
- addle-pated
- addlebrain
- addled
- addlepate
- addlepated
- addlings
- address
- address book
- address oneself
- address oneself to
- addressed
- addressee
- addresses
- addressing
- addressings
- adds
- adds on
- adds to
- adduce
- adenoids
- adept
- adeptly
- adeptness
- adepts
- adequacy
- adequate
- adequate income
- adequately
- adequateness
- adequation
- ADHD
- adhds
- adhere
- adhere to
- adhere to rules
- adhered
- adherence
- adherent
- adherents
- adheres
- adhering
- adhesion
- adhesive
- adhesive bandage
- adhesive tape
- adhesiveness
- adhesives
- adiamorphic
- adieu
- adieued
- adieuing
- adieus
- adieux
- adieuxes
- adios
- adiosed
- adiosing
- adipocerous
- adipose
- adiposity
- adit
- adjacency
- adjacent
- adjacent to
- adjective
- adjectives
- adjoin