Third-person singular simple present indicative form of clinch.(verb)
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Use "clinches" in a sentence
"Texas once again clinches six of the top spots based on how well the cities create, promote and sustain jobs."
"Sometimes the call clinches the identification for me."
"Two things that could make that embarrassment even worse: Word is Huckabee is preparing to concede tomorrow -- possibly, if McCain clinches and after meeting with him."