Added 9 October 2026 plausibleness noun Categories: Describing WordsObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about plausibleness at Wordnik → Where our words come from → The state or quality of being plausible. Origin From plausible + -ness. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: plausibilityimplausiblenessbelievabilityimplausibilitybelievablenesslikelinesspliablenessprobablenesscrediblenesspossiblenessplacablenessexplicableness Back to today's word