RichThesaurus
rapidly
rapidly
synonyms
speedily
quickly
swiftly
fast
apace
hastily
posthaste
promptly
expeditiously
hurriedly
lickety-split
on the double
pronto
double quick
briskly
without delay
at warp speed
immediately
at the speed of light
like the clappers
like the wind
in a flash
at full tilt
p.d.q. (pretty damn quick)
instantly
like mad
like a shot
like (greased) lightning
at a rate of knots
like a bat out of hell
fleetly
flat-out
like a bomb
like billy-o
in haste
chop-chop
in short order
in double quick time
directly
full tilt
as fast as one's legs can carry one
quick
like crazy
at a gallop
at once
like the deuce
like a scalded cat
instantaneously
a mile a minute
like an arrow from a bow
more synonyms
rapidly
antonyms
slowly
eventually
sluggishly
slow
slowly
at moderate speed
later
leisurely
never
tardily
without hurrying
steadily
with leaden wings
with heavy steps
taking one's time
unhurriedly
with leaden steps
larghetto
adagio
adagietto
negligently
in one's own good time
at a snail's pace
heavily
delayed
litherly
at a slow pace
late
not for a while
gradually
ponderously
largo
far
distant
lento
normally
at a leisurely pace
ploddingly
calmly