clincher

American

[klin-cher] / ˈklɪn tʃər /

noun

a person or thing that clinches.
a statement, argument, fact, situation, or the like, that is decisive or conclusive.

The heat was the clincher that made us decide to leave the city.
a nail, screw, etc., for clinching.
Automotive. a clincher tire.

clincher British

/ ˈklɪntʃə /

noun

informal something decisive, such as a fact, score, etc
a person or thing that clinches

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of clincher

1485–95; variant of Middle English clencher ( clench + -er ¹ )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The AI race could well be the clincher.

From BBC • Apr. 7, 2026

He spun three perfect innings in the club’s Game 4 clincher on Thursday.

From Los Angeles Times • Oct. 12, 2025

Sir Ben says that is what first piqued his interest, with the script being a final clincher.

From BBC • Aug. 24, 2025

Then he delivers the clincher line in English while flourishing a finger-heart: “I like . . . you.”

From Salon • Jan. 5, 2025

Maybe it’s just easier to say, This is the clincher, than admit there’s no such thing.

From "Wayward Creatures" by Dayna Lorentz

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023