overswift
speedy
overswiftly
volley
hasty
like a raped ape
like a scalded cat
like a scalded dog
headlong
overquick
ultraswift
forthright
overfast
splitting
ultrarapid
celeritous
overspeedy
rap
shoot
apace
superspeedy
velocitous
like a rat up a drainpipe
rapid
velocious
superquick
exponentially
full tilt
streak
onsweep
quick as a flash
celerity
hyperfast
raking
hand over hand
superfast
teet
amain
fastish
lightningly
A.
beat a hasty retreat
lightning fast
blazingly
like winkin
before you can say knife
in quick sticks
in no time
full pelt
before you can say Jack Robinson