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