validity[noun]Synonyms:- soundness, cogency, force, power, strength, weight
- legality, authority, lawfulness, legitimacy, right
Antonyms: invalidity, invalidness
Contrasted words: inconsistency, unsoundness, fallacy, falsity
Related Words: efficacy,
gravity,
soundness,
persuasiveness,
potency [TahlilGaran] English Synonym Dictionary ▲