The quality of being berserk.

(historical) A Norse warrior who purportedly fought in a trance-like frenzy; a berserk. / One who fights as if frenzied, like a berserker.

Furiously, injuriously, or maniacally violent or out of control. / Bizarre; weird. / (rare, dialectal, slang) Wildly joyous; ecstatic.

(historical) Synonym of berserker (“a Norse warrior who fought in a frenzy”)

plural of berserk

plural of berserker