Added 10 October 2026 clincher noun Categories: LanguageMind & IdeasRare Words noun ! Definition from Wiktionary (CC BY-SA). More about clincher at Wordnik → Where our words come from → That which clinches; that which makes something final or firm; a decisive factor. The clincher was that we couldn't wait any longer to leave, or it would get dark. A tyre with a bead around the edge to attach to the rim of the wheel when inflated. Related Words: determinerclinchclinchingclosurebindgluecementerrivetinganchorholdclench Back to today's word