amuck

adjectives

frenzied as if possessed by a demon
"the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"
amok, amuck, berserk, demoniac, demoniacal, possessed

adverbs

wildly; without self-control
"when the restaurant caught fire the patrons ran amuck, blocking the exit"
amok, amuck
in a murderous frenzy
"rioters running amuck and throwing sticks and bottles and stones"
amok, amuck, murderously