berserk
(historical) A Norse warrior who fought in a frenzy.
Furiously, injuriously, or maniacally violent or out of control.
Valerius, berserk, slashed again and yet again before the crumpling figure could fall.
(by extension) Bizarre; weird.
(by extension, rare, dialectal, slang) Wildly joyous; ecstatic.
To be or become furiously, injuriously, or maniacally violent or out of control.
To make furiously, injuriously, or maniacally violent or out of control.