Answer: rearsup

AnswerCrossword Clue
REARSUP

Reacts in fear, in a way

REARSUP

Rises in anger

REARSUP

Shies violently, as a horse

REARSUP
Erupts, as in anger
REARSUP
Shows anger
REARSUPDoes a pesade, in horsemanship.
REARSUPGets on one's high horse?