fallacious

1 not using or following good reasoning it's fallacious to say that something must exist because science hasn't proven its nonexistence Synonyms of fallacious illogical, illegitimate, inconsequent, inconsequential, invalid, irrational, nonrational, unreasonable, unreasoning, unsound, weakWords Related to fallacious eristic (also eristical), misleading, sophistic (or sophistical), specious; half-baked, ill-advised, misguided, unconsidered, unreasoned; inconsistent; absurd, asinine, foolish, meaningless, nonsensical, preposterous, reasonless, senseless, silly; Kafkaesque, odd, peculiar, strange, surreal, unusual, weird; insane, mad, nutty, wacky (also whacky); disordered, disorganized, rambling, random; unconvincing; inexplicable, unaccountable, unexplainableNear Antonyms of fallacious commonsense, sane, sensible, sober, wise; enlightened, informed, just, justified, reasoned; ordered, organized; clear, cogent, compelling, convincing, credible, persuasive, plausible, satisfying, solid; certain, sure, true; confirmed, corroborated, demonstrated, established, substantiated, validatedAntonyms of fallacious logical, rational, reasonable, sound, valid, well-founded, well-grounded

2 tending or having power to deceive consumers who harbor the fallacious belief that credit-card spending will never catch up with them Synonyms of fallacious beguiling, deceitful, deceiving, deluding, delusive, delusory, deceptive, false, misleading, speciousWords Related to fallacious artful, crafty, cunning, devious, foxy, guileful, shady, shifty, slick, sly, sneaking, sneaky, subtile, subtle, trick, trickish, tricky, underhand, underhanded, wily; inaccurate, incorrect, wrong; bewildering, confounding, distracting, perplexing, puzzling; ambidextrous, crooked, defrauding, dishonest, dissembling, double-dealing, duplicitous, faithless, fast, fraudulent, knavish, lying, mendacious, untrustworthy, untruthful; bogus, counterfeit, fake, feigned, forged, jive [slang], phony (also phoney), sham, spurious; insidious, perfidious, treacherous; ambiguous, circuitous, equivocal, evasive; artificial, backhanded, hypocritical, insincere, left-handed, two-facedNear Antonyms of fallacious candid, direct, foursquare, frank, free-spoken, open, openhearted, outspoken, plain, plainspoken, straight; clarifying, elucidative, explanatory, illuminating; revealing, revelatory; honest, trustworthy, truthfulAntonyms of fallacious aboveboard, forthright, nondeceptive, straightforward