affray/ combustion/ confusion/ disorder/ disturbance/ fray/ hubble bubble/ insurrection/ mêlée/ riot/ ruckus/ rumpus/ tumult/ turmoil/ uproar/ uproar
alert/ awake/ clever/ intelligent/ learned/ slick/ tactful/ vigilant/ wakeful/ (on the)watch/ wide awake/ witty
appalling/ gruesome/ heinous/ hideous/ horrendous/ horrible/ nightmarish/ terrible/ unspeakable
awful/ dire/ dreadful/ ferocious/ gruesome/ horrendous/ macabre