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