|1.||[ adjective ] determined by chance or impulse or whim rather than by necessity or reason|
"a capricious refusal" "authoritarian rulers are frequently capricious" "the victim of whimsical persecutions"
|2.||[ adjective ] having the power of driving or impelling|
"a driving personal ambition" "the driving force was his innate enthusiasm" "an impulsive force"
|3.||[ adjective ] without forethought|
"letting him borrow her car was an impulsive act that she immediately regretted"
|4.||[ adjective ] proceeding from natural feeling or impulse without external stimulus|
"an impulsive gesture of affection"
|5.||[ adjective ] characterized by undue haste and lack of thought or deliberation|
|Synonyms:||impetuous tearaway madcap brainish hotheaded|
"a hotheaded decision" "liable to such impulsive acts as hugging strangers" "an impetuous display of spending and gambling" "madcap escapades" (`brainish' is archaic)
|Related terms:||archaism incautious|