bristle

a stiff fiber (coarse hair or filament); natural or synthetic

a stiff hair

be in a state of movement or action; "The room abounded with screaming children"; "The garden bristled with toddlers"

rise up as in fear; "The dog's fur bristled"; "It was a sight to make one's hair uprise!"

have or be thickly covered with or as if with bristles; "bristling leaves"

react in an offended or angry manner; "He bristled at her suggestion that he should teach her how to use the program"