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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | able or prone to err |
| Synonyms: | careless, deceptive, errable, errant, erring, faulty, frail, heedless, human, ignorant, imperfect, in question, liable, mortal, questionable, uncertain, unreliable, untrustworthy, weak |
| Notes: | fallacious means intended to deceive; fallible means liable to make a mistake or to be inaccurate or erroneous; false means not in accordance with the fact or reality or actuality, or deliberately deceptive, or not genuine or real |
| Antonyms: | certain, correct, definite, infallible, perfect, reliable, strong, sure, unerring |
| 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: | hypothetical |
| Part of Speech: | adjective |
| Definition: | guessed, assumed |
| Synonyms: | academic, assumptive, casual, concocted, conditional, conjecturable, conjectural, contestable, contingent, debatable, disputable, doubtful, equivocal, imaginary, imagined, indefinite, indeterminate, postulated, presumptive, presupposed, pretending, problematic, provisory, putative, questionable, refutable, speculative, stochastic, supposed, suppositional, suppositious, suspect, theoretic, theoretical, uncertain, unconfirmed, vague |
| Antonyms: | calculated, confirmed, factual, measured, proved, proven, real, reliable, truthful |
| Main Entry: | improbable |
| Part of Speech: | adjective |
| Definition: | not likely |
| Synonyms: | doubtful, dubious, fanciful, far-fetched, flimsy*, hundred-to-one, iffy, implausible, inconceivable, not expected, outside chance, questionable, rare, slim, slim and none, unbelievable, uncertain, unconvincing, unheard of, unimaginable, unlikely, unsubstantial, weak |
| Antonyms: | believable, likely, ostensible, plausible, possible, probable, tenable |
* = informal/non-formal usage
| Main Entry: | incredible |
| Part of Speech: | adjective |
| Definition: | beyond belief |
| Synonyms: | absurd, far-fetched, fishy, flimsy*, implausible, impossible, improbable, incogitable, inconceivable, insupposable, out of the question, outlandish, phony, preposterous, questionable, ridiculous, rings phony, suspect, thin*, unbelievable, unconvincing, unimaginable, unsubstantial, untenable, unthinkable |
| Notes: | incredible means 'unbelievable' and incredulous means 'unbelieving' |
| Antonyms: | believable, credible, plausible, possible, realistic, tenable |
* = informal/non-formal usage
| Main Entry: | infamous |
| Part of Speech: | adjective |
| Definition: | shameful, bad in reputation |
| Synonyms: | abominable, atrocious, base, caitiff, contemptible, corrupt, degenerate, despicable, detestable, disgraceful, dishonorable, disreputable, egregious, evil, flagitious, foul, hateful, heinous, ignominious, ill-famed, iniquitous, loathsome, miscreant, monstrous, nefarious, notorious, odious, offensive, opprobrious, outrageous, perverse, questionable, rotten, scandalous, scurvy, shady, shocking, sorry, unhealthy, vicious, vile, villainous, wicked |
| Notes: | famous means widely known, renowned, and esteemed while infamous means having an exceedingly bad reputation, notorious |
| Antonyms: | dignified, glorious, good, innocent, moral, perfect, principled, pure, respectable, righteous, virtuous |
| Main Entry: | lewd |
| Part of Speech: | adjective |
| Definition: | vulgar, indecent |
| Synonyms: | X-rated, bawdy, blue, coarse, erotic, fast*, filthy*, foul-mouthed, gross*, hard-core, immodest, immoral, improper, impure, in bad taste, incontinent, indelicate, lascivious, lecherous, libertine, libidinous, licentious, loose*, lustful, naughty, obscene, off-color, pornographic, profligate, questionable, racy, rakish, ribald, risqué, salacious, scandalous, scurrilous, shameless, smutty, suggestive, taboo, unchaste, unclean, unconventional, unvirtuous, vile, wanton, wicked |
| Antonyms: | clean, decent, moral |
* = informal/non-formal usage
| Main Entry: | moot |
| Part of Speech: | adjective |
| Definition: | doubtful, arguable |
| Synonyms: | at issue, contestable, controversial, debatable, disputable, dubious, open, open to debate, problematic, questionable, suspect, uncertain, undecided, unresolved, unsettled |
| Antonyms: | decided, definite, proven, resolved |
| Main Entry: | notorious |
| Part of Speech: | adjective |
| Definition: | known for a trait, often an |
| Synonyms: | blatant, dishonorable, disreputable, flagrant, glaring, ill-famed, infamous, leading, noted, obvious, opprobrious, overt, patent, popular, prominent, questionable, scandalous, shady, shameful, unadmirable one belled, undisputed, wanted, well-known, wicked |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
