nonvalid

1 having no basis in reason or fact a nonvalid theory that most scientists rejected long ago Synonyms of nonvalid baseless, foundationless, invalid, groundless, unfounded, unreasonable, unsubstantiated, unsupported, unwarrantedWords Related to nonvalid 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 of nonvalid 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 of nonvalid good, hard, just, justified, reasonable, reasoned, substantiated, valid, well-founded, well-grounded

2 having no legal or binding force failure to inform the suspect of his rights rendered his confession nonvalid Synonyms of nonvalid bad, inoperative, invalid, nonbinding, null, nugatory, null and void, voidWords Related to nonvalid illegal; useless, worthless; ineffective, ineffectualNear Antonyms of nonvalid legal; workingAntonyms of nonvalid binding, good, valid