Answer:

getsore

Answer	Crossword Clue
GETSORE	Become irritated
GETSORE	Lose one's sense of humor
GETSORE	Blow up

GETSORE	Bristle
GETSORE	Become peeved
GETSORE	Overdo it at the gym
GETSORE	Start to boil over?
GETSORE	Become ticked off

Crossword

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