reckless synonym | Thesaurus.com

Main Entry:	reckless
Part of Speech:	adjective
Definition:	irresponsible in thought, deed
Synonyms:	adventurous, any which way, audacious, brash, breakneck, carefree, careless, daredevil, daring, desperate, devil-may-care, fast and loose, feckless, foolhardy, harebrained, hasty, headlong, heedless, helter-skelter, hopeless, hotheaded, ill-advised, imprudent, inattentive, incautious, inconsiderate, indiscreet, madcap, mindless, negligent, precipitate, rash, regardless, temerarious, thoughtless, venturesome, wild, adventuresome, kooky, overventuresome, playing with fire, uncareful, venturous
Notes:	feckless means ineffective or having no real worth or purpose; reckless means marked by unthinking boldness or with defiant disregard for danger or consequences rash (the adjective) suggests imprudence and lack of forethought; reckless implies disregard of possible consequences
Antonyms:	careful, cautious, responsible, wary

* = informal/non-formal usage

Main Entry:	adventurous
Part of Speech:	adjective
Definition:	daring, risk-taking
Synonyms:	audacious, bold, brave, courageous, dangerous, daredevil, enterprising, foolhardy, hazardous, headstrong, intrepid, rash, reckless, risky, temerarious, venturesome, adventuresome, venturous
Antonyms:	careful, cautious, prudent, unadventurous

Main Entry:	brash
Part of Speech:	adjective
Definition:	impulsive, brazen
Synonyms:	audacious, bold, cheeky, cocksure, cocky, effervescent, flip, foolhardy, forward, hasty, headlong, heedless, hotheaded, ill-advised, impertinent, impetuous, impolitic, impudent, incautious, inconsiderate, indiscreet, insolent, madcap, maladroit, nervy, precipitate, presuming, presumptuous, pushing, rash, reckless, rude, self-assertive, tactless, thoughtless, uppity, vivacious, brazenfaced, self-asserting, undiplomatic, untactful
Antonyms:	afraid, careful, cautious, discreet, fearful, reserved

* = informal/non-formal usage

Main Entry:	brave
Part of Speech:	adjective
Definition:	bold
Synonyms:	adventurous, audacious, chivalrous, confident, courageous, daring, dashing, dauntless, defiant, doughty, fearless, firm, foolhardy, forward, gallant, game, gritty, gutsy, hardy, heroic, imprudent, indomitable, intrepid, lionhearted, militant, nervy, plucky, reckless, resolute, spirited, spunky, stalwart, stout, stouthearted, strong, unafraid, undaunted, valiant, valorous, venturesome, chin-up, herolike, unabashed, unblenching, undauntable, undismayed, unfearful
Antonyms:	afraid, cautious, fearful, frightened, humble, meek, reticent, retiring, shy, timid

Main Entry:	breakneck
Part of Speech:	adjective
Definition:	extremely fast
Synonyms:	excessive, flat out, headlong, lightning, precipitate, rapid, reckless, speedy, whirlwind, at full tilt, dangerously fast, high-speed
Antonyms:	extremely slow

Main Entry:	daring
Part of Speech:	adjective
Definition:	adventurous
Synonyms:	audacious, bold, brassy, brave, cheeky, cocky, courageous, crusty, fearless, foolhardy, forward, game, gritty, gutsy, impudent, impulsive, intrepid, nervy, obtrusive, out on a limb, plucky, rash, reckless, salty, smart, spunky*, temerarious, valiant, venturesome, adventuresome, fire eating, go for broke, gutty, hot shot, smart-alecky
Antonyms:	afraid, bashful, chicken, cowardly, fearful, meek, shy, timid, unwilling, unadventurous

* = informal/non-formal usage

Main Entry:	defiant
Part of Speech:	adjective
Definition:	disobedient, disregardful
Synonyms:	aggressive, audacious, bold, contumacious, daring, gutsy, insolent, insubordinate, mutinous, obstinate, provocative, rebellious, recalcitrant, reckless, refractory, resistant, sassy, truculent, challenging, insubmissive, resistive
Antonyms:	obedient, respectful, submissive, acquiescent, submitting, subordinating

* = informal/non-formal usage

Main Entry:	excitable
Part of Speech:	adjective
Definition:	easily upset or inspired
Synonyms:	demonstrative, edgy, emotional, enthusiastic, fidgety, fierce, fiery, hasty, high-strung, hot-tempered, hysterical, impatient, impetuous, impulsive, inflammable, intolerant, irascible, mercurial, moody, nervous, neurotic, passionate, peevish, quick, quick-tempered, rash, reckless, restless, sensitive, skittish, susceptible, temperamental, testy, touchy, uncontrolled, uneasy, vehement, violent, volatile, agitable, alarmable, galvanic, hot-headed, overzealous, short fused, volcanic
Antonyms:	calm, easy, insensitive, laid-back, passive, uninspired, easy-going, unexcitable

Main Entry:	extravagant
Part of Speech:	adjective
Definition:	indulgent, wasteful
Synonyms:	absurd, bizarre, costly, crazy, exaggerated, excessive, exorbitant, expensive, extortionate, extreme, fanciful, fancy, fantastic, flamboyant, flashy, foolish, garish, gaudy, grandiose, immoderate, implausible, improvident, imprudent, inordinate, lavish, ludicrous, nonsensical, ornate, ostentatious, outrageous, preposterous, pretentious, prodigal, profligate, reckless, ridiculous, showy, silly, spendthrift, steep, unbalanced, unconscionable, unreasonable, unrestrained, overpriced
Antonyms:	close, economical, moderate, provident, reasonable, saving, stingy, thrifty, unpretentious

Main Entry:	feckless
Part of Speech:	adjective
Definition:	without purpose
Synonyms:	aimless, carefree, careless, feeble, fustian, futile, good-for-nothing*, hopeless, incautious, incompetent, ineffective, ineffectual, irresponsible, meaningless, reckless, shiftless, useless, weak, wild, worthless, uncareful
Antonyms:	competent, effective, effectual, efficient, purposeful, responsible, strong, useful

* = informal/non-formal usage

Main Entry:	foolhardy
Part of Speech:	adjective
Definition:	impetuous, rash
Synonyms:	adventurous, audacious, bold, breakneck, daredevil, daring, devil-may-care, harebrained*, headstrong, imprudent, incautious, irresponsible, madcap, precipitate, reckless, temerarious, venturesome, adventuresome, off deep end, out on limb, venturous, wide open
Antonyms:	careful, cautious, discreet, thoughtful

* = informal/non-formal usage

Main Entry:	giddy
Part of Speech:	adjective
Definition:	silly, impulsive
Synonyms:	brainless, capricious, careless, changeable, dizzy, empty-headed, erratic, fickle, flighty, frivolous, heedless, inconstant, irresolute, irresponsible, lightheaded, punchy, reckless, scatterbrained, skittish, slaphappy, swimming, thoughtless, unbalanced, unsettled, unstable, unsteady, vacillating, volatile, whimsical, whirling, wild, woozy*, bemused, bubbleheaded, changeful, ditzy, flustered, gaga, reeling
Antonyms:	calm, careful, level-headed, sensible, serious

* = informal/non-formal usage

Main Entry:	haphazard
Part of Speech:	adjective
Definition:	without plan or organization
Synonyms:	accidental, aimless, any which way, arbitrary, careless, casual, chance, desultory, devil-may-care, disorderly, disorganized, erratic, fluke, helter-skelter, hit-or-miss, incidental, indiscriminate, irregular, loose, offhand, purposeless, random, reckless, slapdash, slipshod, spontaneous, sudden, unconcerned, unconscious, uncoordinated, unexpected, unorganized, unpremeditated, unthinking, willy-nilly, all over the map, any old way, designless, unconsidered, unmethodical, unsystematic
Antonyms:	careful, intentional, methodical, organized, planned, straight, systematic, designed, thought-out

* = informal/non-formal usage

Main Entry:	happy-go-lucky
Part of Speech:	adjective
Definition:	blithely unconcerned
Synonyms:	blithe, carefree, casual, cheerful, content, cool, devil-may-care, easy, easygoing, feckless, free and easy, heedless, improvident, insouciant, irresponsible, lackadaisical, lighthearted, nonchalant, reckless, unconcerned, untroubled, carefree and untroubled, free-minded, living the life of Riley, without care
Antonyms:	disconsolate, discontented, dissatisfied, distressed, troubled, upset, worried

* = informal/non-formal usage

Main Entry:	harebrained
Part of Speech:	adjective
Definition:	stupid, unthinking
Synonyms:	absurd, asinine, barmy, bizarre, careless, changeable, crazy, dizzy, empty-headed, featherbrained, flighty, foolish, frivolous, giddy, half-baked, heedless, inane, irresponsible, loony, mindless, preposterous, rash, reckless, scatterbrained, unstable, unsteady, wacky*, wild, rattlebrained
Antonyms:	brainy, intelligent, reasonable, sensible, smart, thoughtful

* = informal/non-formal usage

Main Entry:	hasty
Part of Speech:	adjective
Definition:	speedy; without much thought
Synonyms:	abrupt, agile, brash, breakneck, brief, brisk, careless, cursory, eager, expeditious, fast, fiery, fleet, fleeting, foolhardy, headlong, heedless, hurried, ill-advised, impatient, impetuous, impulsive, incautious, inconsiderate, madcap, on the double, passing, perfunctory, precipitate, prompt, pronto, quick, quickie, rapid, rash, reckless, rushed, short, slapdash, snappy, sudden, superficial, swift, thoughtless, urgent, PDQ, chop-chop*, harefooted, quickened, slambang
Antonyms:	delayed, lazy, slow, lingering, loitering

* = informal/non-formal usage

Main Entry:	headstrong
Part of Speech:	adjective
Definition:	stubborn
Synonyms:	bullheaded, contrary, determined, foolhardy, froward, hard-core, hard-nosed, heedless, imprudent, impulsive, intractable, mulish, murder, obstinate, perverse, pig-headed*, rash, reckless, refractory, uncontrollable, ungovernable, unruly, unyielding, willful, hard-shell, locked-in, mule, self-willed, strong-minded
Antonyms:	calm, docile, moderate, obedient, submissive, tolerant

* = informal/non-formal usage

Main Entry:	heedless
Part of Speech:	adjective
Definition:	careless
Synonyms:	daydreaming, fast and loose, feckless, foolhardy, impetuous, imprudent, inadvertent, inattentive, incautious, inconsiderate, neglectful, negligent, oblivious, precipitate, rash, reckless, slapdash*, sloppy, thoughtless, uncaring, unmindful, unobservant, unthinking, unwary, asleep at the switch, disregardful, goofing off, irreflective, out to lunch
Antonyms:	attentive, careful, cautious, concerned, heedful, observant, thoughtful, caring

* = informal/non-formal usage

Main Entry:	ill-advised
Part of Speech:	adjective
Definition:	unwise, not thought out
Synonyms:	brash, confused, foolhardy, foolish, half-baked, hotheaded, ill-considered, ill-judged, impolitic, imprudent, inappropriate, incautious, inconsiderate, indiscreet, inexpedient, injudicious, madcap, misguided, off the top of one's head, overhasty, rash, reckless, short-sighted, thoughtless, unseemly, wrong
Antonyms:	reasonable, sensible, well-advised, wise

* = informal/non-formal usage

Main Entry:	improvident
Part of Speech:	adjective
Definition:	careless, spendthrift
Synonyms:	extravagant, heedless, imprudent, inconsiderate, lavish, negligent, prodigal, profligate, profuse, reckless, shiftless, shortsighted, thoughtless, wasteful, thriftless, uneconomical, unthrifty
Antonyms:	careful, miserly, provident, thrifty