Furiously, injuriously, or maniacally violent or out of control.
Bizarre; weird.
Wildly joyous; ecstatic.
Synonym of berserker (“a Norse warrior who fought in a frenzy”)
Intensely preoccupied with or by a given topic or emotion; driven by a specified obsession.
Influenced or controlled by evil spirits, but less than possessed in that the spirits do not actually reside in the victim.