[bə(ː)ˈzəːk], (Adjective)

Definitions:
- out of control with anger or excitement; wild or frenzied
(e.g: he went berserk, throwing things around the apartment)


Phrases:

Origin:
early 19th century (originally as a noun denoting an ancient Norse warrior who fought with wild or uncontrolled ferocity): from Old Norse berserkr (noun), probably from birn-, bjorn (see bear) + serkr ‘coat’, but also possibly from berr ‘bare’ (i.e. without armour)