Answer: bristle

AnswerCrossword Clue
BRISTLE

React angrily

BRISTLE

Reply defensively

BRISTLE

Brush component

BRISTLE
Display irritation
BRISTLE
Brush part
BRISTLEGet one's back up
BRISTLETake offense
BRISTLEShow irritation
BRISTLEBetray discontentment
BRISTLEGet angry and defensive
BRISTLEBecome aggressive.
BRISTLEGrow aggressive.
BRISTLEEvince resentment.
BRISTLEHave an aggressive air.
BRISTLETake an aggressive attitude.
BRISTLEWhisker.
BRISTLEHair.
BRISTLEShow anger
BRISTLETense up
BRISTLEUnshackle the hackles
BRISTLEStiff prickly hair
BRISTLEStand up
BRISTLEShow some irritation
BRISTLEBrush material
BRISTLEVisibly take offense