RichThesaurus
subitaneous
subitaneous
synonyms
abrupt
precipitous
precipitant
sudden
precipitate
hurried
rushing
hasty
swift
headlong
impetuous
spontaneous
breakneck
brief
rash
violent
unexpected
willful
indiscreet
rapid
refractory
unanticipated
unforeseen
reckless
off the top of head
gone off half-cocked
ill-advised
uncontrolled
without warning
heedless
madcap
jump the gun
quick
harum-scarum
frantic
plunging
off the hip
impatient
unthinking
restive
cursory
unreflecting
vehement
superficial
slapdash
suddent
unplanned
unpremeditated
unrestrained
unbridled
more synonyms
subitaneous
antonyms
slow
cautious
careful
unhurried
thoughtful
unrushed
wise
leisurely
calm
reflective
sensible
gradual
considerate
circumspect
eventual
easily