Main entry: impetuous, impulsive, hotheaded, brainish, tearaway, madcap
Definition: characterized by undue haste and lack of thought or deliberation
Usage: a hotheaded decision; liable to such impulsive acts as hugging strangers; an impetuous display of spending and gambling; madcap escapades; (`brainish' is archaic)
Main entry: capricious, impulsive, whimsical
Definition: determined by chance or impulse or whim rather than by necessity or reason
Usage: a capricious refusal; authoritarian rulers are frequently capricious; the victim of whimsical persecutions
Main entry: impulsive, driving
Definition: having the power of driving or impelling
Usage: a driving personal ambition; the driving force was his innate enthusiasm; an impulsive force
Main entry: impulsive
Definition: without forethought
Usage: letting him borrow her car was an impulsive act that she immediately regretted
Main entry: unprompted, impulsive
Definition: proceeding from natural feeling or impulse without external stimulus
Usage: an impulsive gesture of affection