hasty

adj

1. quick, rapid, swift, fleet, fast, brisk; prompt, expeditious, instantaneous, immediate; rushing, hurried, running, urgent, winged, light-footed, light-legged, light of heel, eagle-winged, quick as lightning, quick as a wink, swift as an arrow; nimble, snappy, active, sprightly, lively, dynamic, bustling.

2. unduly quick, rash, precipitate, headlong; reckless, careless, heedless, thoughtless, pell-mell, helter-skelter, harum-scarum, head over heels; brash, incautious, injudicious, ill-advised, indiscreet, unwary, foolish, abrupt, sudden, unexpected, premature; impetuous, impulsive, unrestrained, ungoverned, uncontrolled, unchecked, unbridled, feverish, impatient, frantic, impassioned; madcap, madbrained, foolhardy, daredevil, breakneck, adventurous.

3. cursory, fleeting, slight, superficial; brief, perfunctory, short-lived, temporary, transitory, fugacious, impermanent; short, rapid, momentary; volatile, meteoric, flying, urgent; passing, mortal, perishable, deciduous, caducous; ephemeral, evanescent.

4. irritable, impatient, irascible; quick-tempered, hot-tempered, hot-blooded, like tinder, like touchwood, volatile, excitable, explosive, fiery, volcanic, inflammable, high-strung, high-mettled; choleric, splenetic, fretful, captious; quarrelsome, querulous, angry, simmering; fierce, quick, ungovernable, impulsive, impetuous; petulant, touchy, tetchy, contentious, peppery, snappish, waspish, shrewish; brusque, abrupt, brash, bearish, gruff, boorish, churlish, moody, hostile, resentful; acerbic, jaundiced, sour.