horripilate UK /hɒˈɹɪpɪˌleɪt/US /hɔˈɹɪpəˌleɪt/ verb1 •To bristle in fear or horror; to have goose bumps or goose pimples.When Hel shrugged and changed the subject diplomatically, the nape of Diamond's neck horripilated with embarrassment. — 1979 formshorripilated · horripilating · horripilates