A fact, argument, or statement that settles a question or wins a debate decisively; the final deciding point.
From 'clinch' (possibly from 'clench,' meaning to grip tightly, from Old English 'clyncan'). A clincher 'clinches' an argument by gripping it firmly and making it impossible to dispute.
In boxing, a 'clinch' is when fighters grab each other tightly—so a 'clincher' argument is one that grabs the debate so firmly that nothing can shake it free!
Complete word intelligence in one call. Free tier — 50 lookups/day.