- altercate
- a shake up
- amenability
- an increase
- a doodle
- a shake-down
- arty
- a laugh killing
- above one's head
- auctioneer
- a fine kettle of fish
- abruptness
- ad rem
- all fingers and thumbs
- as dead as a doornail
- a pushover
- asthenia
- acquit oneself of
- a doddle
- a bit thick
- at the end of the day
- a speck of
- at a rate of knots
- a word
- amazed thunderstruck
- ageist
- assort
- a pat on the back
- as sure as eggs is eggs
- a gogo
- accede to
- aristos
- at a loss for words
- ad
- a card
- abundant in
- and fishin'
- airnheaded
- a chip on one's shoulder
- as pleased as Punch
- as right as rain
- a breeze
- accessories
- a smidgen of
- as best one can
- as soon as possible. a.s.a.p
- apartheid
- as thin as a reed
- a caution
- a tad of
- abnegate
- asleep on the job
- a nonesuch
- a dead loss
- as happy as Larry
- as fit as a fiddle
- as soon as possible
- ardency
- all hell broken loose
- a blue funk
- a load of pants
- arch. outrival
- accessibility
- approved school
- argute
- asthenic
- assumptive
- as poor as a church mouse
- ackers
- a snap
- away with the fairies
- acerb
- a doss
- a.s.a.p
- arh pursy
- as plain as pickestaff
- afeared
- as fit as a flea
- a bit off
- a snip
- as cross as two sticks
- a barrel of laughs
- asperse
- as plain as day
- almsgiving
- as pure as the driven snow
- affrighted
- advert
- a dime a dozen
- as hard as stone
- Al
- as clear as day
- a pile
- a bludge
- all Greek to some
- adamantine
- as plain as a pike-staff
- a snack
- A1
- a swag