fast
flying
hasty
headlong
helter-skelter
overhasty
pell-mell
precipitant
precipitate
precipitous
quick
rush
rushed
abrupt
accident-prone
at the double
breakneck
brief
careless
crowded
cursory
desperate
devil-may-care
double-quick
double-time
expeditious
festinate
feverish
frantic
frenetic
furious
hard-pressed
hard-pushed
hard-run
harum-scarum
hastened
hectic
hotheaded
immediate
impetuous
instant
last-minute
mad
offhand
on the double
on the spot
overeager
overenthusiastic
overzealous
passing
perfunctory
pressed
pressed for time
prompt
pushed
curried
flurried
scurried
unhurried
unworried
worried