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invalid

adjective

Synonyms and Antonyms of invalid

  1. chronically or repeatedly suffering from poor health <an old and now invalid woman who rarely gets out anymore> Synonyms ailing, invalid, weaklyRelated Words bedfast, bedridden; delicate, fragile, frail; dying, fading, incurable, moribund; challenged, debilitated, incapacitated, lame; decrepit, enfeebled, feeble, infirm, weak, weakened, worn-out; ill, indisposed, peaked, poorly, run-down, sick, unhealthy, unsound, unwellNear Antonyms able-bodied, fit, hale, hearty, sound, well-conditioned, whole, wholesomeAntonyms healthy, well




invalid

adjective

Synonyms and Antonyms of invalid

  1. 1 having no legal or binding force <the treaty is invalid once one side violates it> Synonyms bad, inoperative, invalid, nonbinding, nonvalid, nugatory, null and void, voidRelated Words illegal; useless, worthless; ineffective, ineffectualNear Antonyms legal; workingAntonyms binding, good, valid

  2. 2 not being in agreement with what is true <that's an invalid assumption on your part> Synonyms erroneous, inaccurate, incorrect, inexact, invalid, off, unsound, untrue, untruthful, wrongRelated Words counterfactual; specious, spurious; deceptive, delusive, delusory, distorted, fallacious, fictitious, illusory, misleading; amiss, askew, awry; deceitful, dishonest, fraudulent, lying, mendacious; unconfirmed, unproven, untested; fabricated, invented, made-up, trumped-upNear Antonyms confirmed, demonstrated, established, proven, tested; faultless, flawless, impeccable, letter-perfect, perfectAntonyms accurate, correct, errorless, exact, factual, precise, proper, right, sound, true, valid, veracious

  3. 3 not using or following good reasoning <an argument which has one untrue premise is invalid> Synonyms fallacious, illegitimate, inconsequent, inconsequential, invalid, irrational, nonrational, unreasonable, unreasoning, unsound, weakRelated Words 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 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 logical, rational, reasonable, sound, valid, well-founded, well-grounded

  4. 4 having no basis in reason or fact <an invalid claim that can be easily disproved by the facts> Synonyms baseless, foundationless, invalid, nonvalid, unfounded, unreasonable, unsubstantiated, unsupported, unwarrantedRelated Words illogical, irrational, nonlogical, unconscionable, unsound; fallacious, false, misled, wrong; gratuitous, uncalled-for, unnecessary; flimsy, implausible, misleading, specious, unconvincing, untenable, weak; ill-advised, unreasoned; inconsistent; absurd, asinine, brainless, crackpot, crazy, fatuous, foolish, half-witted, harebrained, meaningless, nonsensical, preposterous, senseless, silly, simpleminded, stupid, unwise; insane, lunatic, mad, nutty, wacky (also whacky)Near Antonyms certified, validated, verified; confirmed, corroborated; informed, logical, rational; commonsense, sane, sensible, sober, wise; actual, genuine, real, true; certain, sure; clear, cogent, compelling, convincing, credible, persuasive, plausible, satisfying, solid, soundAntonyms good, hard, just, justified, reasonable, reasoned, substantiated, valid, well-founded, well-grounded




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