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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | careless, reckless |
| Synonyms: | capricious, carefree, devil-may-care, feckless, fickle, flighty, fly-by-night, giddy, harebrained, ill-considered, immature, immoral, incautious, lax, loose*, no-account, rash, scatterbrained, shiftless, thoughtless, unaccountable, unanswerable, uncareful, undependable, unpredictable, unreliable, unstable, untrustworthy, wild |
| Antonyms: | accountable, careful, liable, reliable, responsible, trustworthy |
* = informal/non-formal usage
| Main Entry: | careless |
| Part of Speech: | adjective |
| Definition: | without sufficient attention |
| Synonyms: | absent-minded, abstracted, casual, cursory, disregardful, forgetful, hasty, heedless, improvident, imprudent, inaccurate, inadvertent, incautious, inconsiderate, indifferent, indiscreet, indolent, injudicious, irresponsible, lackadaisical, lax, loose, mindless, napping, negligent, nonchalant, oblivious, offhand, perfunctory, pococurante, reckless, regardless, remiss, slipshod, sloppy, thoughtless, uncircumspect, unconcerned, unguarded, unheeding, unmindful, unobservant, unreflective, unthinking, wasteful |
| Notes: | carefree means free of trouble and worry and care while careless means marked by lack of attention or consideration or forethought or thoroughness; not careful |
| Antonyms: | accurate, attentive, careful, cautious, concerned, mindful, painstaking, prudent, ready, thoughtful |
| Main Entry: | changeable |
| Part of Speech: | adjective |
| Definition: | erratic |
| Synonyms: | agitated, capricious, changeful, commutative, convertible, fickle, fitful, flighty, fluctuating, fluid, impulsive, inconstant, indecisive, irregular, irresolute, irresponsible, kaleidoscopic, mercurial, mobile, movable, mutable, permutable, protean, restless, reversible, revocable, shifting, skittish, spasmodic, transformable, transitional, uncertain, unpredictable, unreliable, unsettled, unstable, unsteady, vacillating, vagrant, variable, variant, varying, versatile, volatile, wavering, whimsical |
| Antonyms: | certain, changeless, constant, fixed, lasting, reliable, stable, steady, sure, unchangeable, undeviating |
| Main Entry: | crazy |
| Part of Speech: | adjective |
| Definition: | unrealistic, fantastic |
| Synonyms: | absurd, balmy, beyond all reason, bizarre, cockeyed, derisory, eccentric, fatuous, foolhardy, foolish, goofy*, half-baked, harebrained, idiotic, ill-conceived, impracticable, imprudent, inane, inappropriate, insane, irresponsible, loony, ludicrous, nonsensical, odd, out of all reason, outrageous, peculiar, preposterous, puerile, quixotic, ridiculous, senseless, short-sighted, silly, strange, unworkable, weird, wild |
| Antonyms: | believeable, realistic, reasonable, sensible |
* = informal/non-formal usage
| Main Entry: | derelict |
| Part of Speech: | adjective |
| Definition: | careless, negligent |
| Synonyms: | behindhand, delinquent, disregardful, irresponsible, lax, regardless, remiss, slack, undependable, unreliable, untrustworthy |
| Antonyms: | careful, caring |
| 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, uncareful, useless, weak, wild, worthless |
| 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 |
| Antonyms: | competent, effective, effectual, efficient, purposeful, responsible, strong, useful |
| Main Entry: | fly-by-night |
| Part of Speech: | adjective |
| Definition: | unreliable and shady |
| Synonyms: | brief, cowboy, disreputable, dubious, ephemeral, evanescent, fleeting, here-today-gone-tomorrow, impermanent, irresponsible, momentary, not to be relied upon, not to be trusted, passing, questionable, shady, shifty, short-lived, slimy*, slippery*, temporary, treacherous, trustless, undependable, unprofessional, unreliable, unsure, untrustworthy |
| Antonyms: | dependable, reliable, reputable, responsible, trustworthy |
* = informal/non-formal usage
| Main Entry: | foolhardy |
| Part of Speech: | adjective |
| Definition: | impetuous, rash |
| Synonyms: | adventuresome, adventurous, audacious, bold, breakneck, daredevil, daring, devil-may-care, harebrained, headstrong, imprudent, incautious, irresponsible, madcap, off deep end, out on limb, precipitate, reckless, temerarious, venturesome, venturous, wide open |
| Antonyms: | careful, cautious, discreet, thoughtful |
| Main Entry: | giddy |
| Part of Speech: | adjective |
| Definition: | silly, impulsive |
| Synonyms: | bemused, brainless, bubbleheaded, capricious, careless, changeable, changeful, ditzy, dizzy, empty-headed, erratic, fickle, flighty, flustered, frivolous, gaga, heedless, inconstant, irresolute, irresponsible, lightheaded, punchy, reckless, reeling, scatterbrained, skittish, slaphappy, swimming*, thoughtless, unbalanced, unsettled, unstable, unsteady, vacillating, volatile, whimsical, whirling, wild, woozy |
| Antonyms: | calm, careful, level-headed, sensible, serious |
* = informal/non-formal usage
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
