🌍 English Origins #52
Old Norse
berserk
/bərˈzɜːrk/
광포한, 미쳐 날뛰는
From Old Norse ber ("bear") + serkr ("shirt") — "a warrior clad in bearskin."
✍️ ONGO · 2026-06-06 · 5 min read
01

Origin Story

Era
The Viking Age, in northern Europe

The word berserk comes from a fearsome breed of Viking warrior. In Old Norse, ber means "bear" and serkr means "shirt," and the two together — berserkr — meant "one clad in a bearskin." Before battle, these warriors are said to have thrown on the hides of bears or wolves and worked themselves into a frenzy in which they felt neither pain nor fear, fighting with savage abandon as though possessed by a beast. From the wild fury of these warriors came berserk, meaning "to lose all reason and rage uncontrollably." Today "go berserk" simply means "to blow up completely, to run wild."

Some scholars read berserkr not as "bearskin" (ber-serkr) but as "bare-shirt" (bare-serkr) — a warrior who fought without a shirt of mail. Either way, the picture is the same: a fighter raging into battle with no armor and no fear.

📚 Sources
  • Online Etymology Dictionary
    berserk (n.): 1822, from Old Norse berserkr (n.) "raging warrior of superhuman strength," probably from ber- "bear" + serkr "shirt," thus literally "a warrior clothed in bearskin"
  • Merriam-Webster Dictionary
    berserk: from berserker, from Old Norse berserkr, probably from bjorn bear + serkr shirt
  • Oxford English Dictionary
    berserk: from Old Norse berserkr, perhaps from bjorn "bear" + serkr "coat," or from berr "bare" (i.e. without armour)
02

Word Evolution

1
Old Norse
berserkr
a frenzied warrior in bearskin
2
19th-century English
berserker / berserk
a raging warrior
3
Modern English
berserk
frenzied, wildly out of control
03

Words from the Same Root

bear
The animal "bear" — shares a Germanic root with the ber ("bear") in berserk.
sark
An old Scots word for "shirt," from the same root as serkr ("shirt").
viking
A word from the same Norse warrior culture that gave us berserk.
04

Memory Hook

Remember berserk = ber ("bear") + serk ("shirt"). Picture a warrior raging in a bearskin.

""The frenzy of a bearskin-clad warrior froze into a single word that survives to this day.""

Next Word
jovial
쾌활한, 명랑한
Read →