double
feverishly
triple
quickly
speedingly
at speed
fastish
double-quick
apace
rate
hand over hand
like a rat up a drainpipe
like shit through a goose
good lick
nippy
dual-exceptional
overspeedily
rapidly
velocious
fast
pacey
prestissimo
briskly
hell-for-leather
A.
ultrarapid
bolt
semifast
hyperlight
overspeedy
have legs
at a rate of knots
in quick sticks
at full throttle
volley
thirteen to the dozen
like a raped ape
like a scalded cat
swift
lightning fast
at the double
scud
mile-a-minute
like a scalded dog
skud
fastgoing
fizzing
allegro non troppo
speedfully
speed of light
balls-out
acceleratedly
velocitous
hastening
like winking
run
vibratory
jabber
like the wind
amain
keep pace
rollercoastering
celerity
before you can say knife
double quick
splitting
with a quickness
double time
post-haste
turn of pace
hotfoot
lightspeed
bullet
before you can say Jack Robinson
full tilt
on the hurry up
speedwise
high-tempo
double-count
bounce
fast-moving
eternity
posthaste
speedful
head over heels
rapidness
chase
quickening
accelerated
twicet
grasshopping
speediness
rapidity
quickness
twice