Sudden, Startling, Brusque
This page is the CodyCross answer for the clue below from Sports, Group 160, Puzzle 3 (Bare Knuckle Boxing).
Question is: Sudden, Startling, Brusque
and the answer is: ABRUPT
Word Meaning:
ABRUPT — (obsolete, rare) Broken away (from restraint).
Definitions from Wiktionary.