Synonyms for Berserk:

adj.

angry (adjective)
mad.
crazed (adjective)
deranged, crazy, mad, demented, violent, maniacal, insane.
destructive (adjective)
violent.
haywire (adjective)
amok.
insane (adjective)
frenzied, batty, schizoid, nutty, deranged, demented, mad, babbling, Crack-brained, crazed, hysterical, feverish, brain-sick, irrational, psycho, psychotic, unbalanced, insane, maniacal, crazy, lunatic, blithering, neurotic, kooky, delirious.
uncontrolled (adjective)
frenzied.
violent (adjective)
demoniac.

adv

crazily (adverb)
amuck.

n.

berserk (noun)
demoniac, amok, demoniacal, insane, possessed, amuck.
frenzied (noun)
crazed, wild, violent.

Other synonyms:

Other relevant words:
crazed, amuck, demoniacal, amok, violent, possessed, demoniac, wild.

Usage examples for berserk

  1. With a passionate cry like that of some wild creature deprived of its young, the erstwhile Berserk released the handle and sprang in pursuit. – A Damsel in Distress by Pelham Grenville Wodehouse
  2. That is to say, for wages of twenty dollars a month he was in harness each day from four in the morning till nine at night at any and every job that called for doing, bringing to it a sort of frenzied and inexhaustible enthusiasm; for he was one of those men incapable by his nature of working save at the full pitch of strength and energy, in a series of berserk rages. – Maria Chapdelaine A Tale of the Lake St. John Country by Louis Hemon
  3. So it was sheer berserk anger which prompted the attack. – Castle of Terror by E.J. Liston