Synonyms and Antonyms of valid

  1. 1 according to the rules of logic your argument isn't valid because you're taking what should be the conclusion and using it as a premise Synonyms of valid analytic (or analytical), coherent, consequent, good, rational, reasonable, sensible, sound, logical, well-founded, well-groundedWords Related to valid a posteriori, a priori, syllogistic; cognitive, empirical (also empiric); defendable, defensible, justifiable, maintainable, supportable, sustainable, tenableNear Antonyms of valid casuistic (or casuistical), eristic (also eristical), fallacious, misleading, sophistic (or sophistical), specious; unarticulated; unscientific; absurd, cockeyed, crazy, daffy, fatuous, half-baked, half-witted, harebrained, insane, loony (also looney), mad, nonsensical, nutty, preposterous, simpleminded, stupid, weak-minded, witless; senseless, thoughtless; uncompelling, unconvincingAntonyms of valid illegitimate, illogical, incoherent, inconsequent, inconsequential, invalid, irrational, unreasonable, unsound, weak

  2. 2 based on sound reasoning or information only further investigation will show whether your theory is valid Synonyms of valid commonsense, commonsensible, commonsensical, firm, hard, informed, just, justified, levelheaded, logical, rational, reasonable, reasoned, sensible, sober, solid, good, well-foundedWords Related to valid actual, real, true; certain, sure; certified, validated, verified; confirmed, corroborated, substantiated; cogent, convincing; colorable, credible, plausibleNear Antonyms of valid unsubstantiated, unsupported, unwarranted; flimsy, implausible, unconvincing, weak; fallacious, false, misguided, misledAntonyms of valid groundless, illogical, invalid, irrational, nonrational, nonsensical, nonvalid, unfounded, uninformed, unjustified, unreasonable, unreasoned, unsound

Synonym Discussion of valid

valid, sound, cogent, convincing, telling mean having such force as to compel serious attention and usually acceptance. valid implies being supported by objective truth or generally accepted authority.
    • a valid reason for being absent
    • a valid marriage
sound implies a basis of flawless reasoning or of solid grounds.
    • a sound proposal for reviving the economy
cogent may stress either weight of sound argument and evidence or lucidity of presentation.
    • the prosecutor's cogent summation won over the jury
convincing suggests a power to overcome doubt, opposition, or reluctance to accept.
    • a convincing argument for welfare reform
telling stresses an immediate and crucial effect striking at the heart of a matter.
    • a telling example of bureaucratic waste

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