Thesaurus
Synonyms & Antonyms of valid
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 for valid
- analytic
- (or analytical),
- coherent,
- consequent,
- good,
- logical,
- rational,
- reasonable,
- sensible,
- sound,
- well-founded,
- well-grounded
Words Related to valid
Near Antonyms for valid
- casuistic
- (or casuistical),
- eristic
- (also eristical),
- fallacious,
- misleading,
- sophistic
- (or sophistical),
- specious
- absurd,
- cockeyed,
- crazy,
- daffy,
- fatuous,
- half-baked,
- half-witted,
- harebrained,
- insane,
- loony
- (also looney),
- mad,
- nonsensical,
- nutty,
- preposterous,
- simpleminded,
- stupid,
- weak-minded,
- witless
Antonyms for valid
2
based on sound reasoning or information
- only further investigation will show whether your theory is valid
Synonyms for valid
Words Related to valid
Near Antonyms for valid
Antonyms for valid
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Merriam-Webster unabridged
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Time Traveler for valid
The first known use of valid was in 1571
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