flutter
palpitate
walk over
hard-driving
flying
uptempo
fast-flying
like a rat up a drainpipe
good lick
at full tilt
speedingly
feverishly
shoot
blazing
faster than Minute Rice
fast-moving
blistering
hurry
like shit through a goose
speed
travel rapidly
hand over hand
zip
apace
briskly
bullet
speed of light
mile-a-minute
superspeedy
hell-for-leather
like the wind
presto
fleet
at speed
streak
quickly
volley
swift
hyperfast
superconvergent
superfast
action
with a quickness
splitting
kickingly
hot
fastish
rapidly
prestissimo
lightspeed
lightning-quick
exponentially
before you can say knife
allegretto
at a rate of knots
before you can say Jack Robinson
blazingly
spin
hare
run
A.
lightning fast
pokey
quick as a flash
tachy-
lightningly
warp speed
superspeed
rake
fastuously
blaze away
double time
furiously
on the wings of the wind
double quick
nippy
lickety
blaze
triple
lively
agile
upbeat
allegro
zoom
hyperaccelerated
drum
quick
raking
off like a bride's nightie
spry
nimble
spank
overspeedy
amain
full pelt
backbeat