Answer:

clinches

Answer	Crossword Clue
CLINCHES	Makes final
CLINCHES	Assures, as victory
CLINCHES	Embraces

CLINCHES	Sews up
CLINCHES	Boxing term.
CLINCHES	Boxers' entanglements

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.