berserker
UK[bəˈzɜːkə]US[bərˈzɜːrkər]
n
a norse warrior who fought with a wild, frenzied, and seemingly invulnerable fury in battle.
n
a person who behaves in a wildly violent or uncontrolled way.
Etymology
the term 'berserker' entered english in the early 19th century from old norse 'berserkr', the name for a legendary norse warrior famed for a trance-like, furious rage in battle. the old norse word is traditionally analyzed as a compound, likely from 'ber-' (meaning 'bear') and 'serkr' (meaning 'shirt' or 'coat'), thus literally 'bear-shirt', possibly referring to warriors who wore bear pelts or fought with the strength of a bear. an alternative theory suggests 'ber-' could mean 'bare', implying fighting without armor. this literal imagery of animalistic strength and ferocity evolved directly into the modern abstract meaning, denoting any person exhibiting a similarly wild, frenzied, and destructive fury.
Analysis
the word is a loanword from old norse, borrowed as a single lexical unit. it is not productively formed from separable morphemes within modern english spelling.
Examples
in the saga, the berserker worked himself into a frenzy before charging into the enemy lines.
the protest turned violent when a berserker in the crowd began smashing windows.
he played the video game character like a berserker, attacking every enemy without any strategy.