convincingness

the capacity to persuade he spoke with such convincingness that we never dreamed he was lying Synonyms authority, conclusiveness, cogency, effectiveness, force, forcefulness, persuasion, persuasiveness, suasivenessRelated Words impact, might, power, punch, strength, weight; believability, credibility, soundness, validity; authoritativeness, definitiveness; influence, sway; appeal, seductivenessNear Antonyms invalidity, shakiness, unsoundness; feebleness, powerlessness, weaknessAntonyms inconclusiveness, ineffectiveness, ineffectuality, ineffectualness