cogency cogence • cogener · · · Info · Definitions · Synonyms · Characters · · cogency · · Text Latin · · Script 7 · · Length Definitions · · · (noun) persuasive relevance. · · Noun Definition 1 (noun) the quality of being valid and rigorous. Synonyms: validity, rigor, rigour. · · Noun Definition 2 Synonyms · · · validity · · Synonym 1 rigor · · Synonym 2 rigour · · Synonym 3 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 n latin small letter n U+006E o latin small letter o U+006F y latin small letter y U+0079