brunt (English)

Where does "brunt" come from?

The English noun 'brunt' comes from Middle English 'brunt'[1]. This Middle English term derives from Old Norse 'brundr' or 'brundtíð', meaning oestrus or rut, which traces back to Proto-Germanic '*brunstiz'[1]. The Proto-Germanic form was built from '*brinnaną' combined with the suffix '*-þiz'[2]. Ultimately, these Germanic roots connect to the Proto-Indo-European base '*bʰrewh₁-' meaning to boil or brew[3][5]. Over time, the meaning shifted from the heat or rush of an advance into the force of an attack and the chief consequences of an event[1].

Open questions

The exact relationship between the Middle English form and various Old Norse and Proto-Germanic candidates involves multiple proposed derivations. [1]
The pre-Germanic reconstruction and root extensions rely on historical linguistic inferences. [3] [5]

Full etymology tree

brunt (English), 'The full adverse effects; the chief consequences or negative results of a thing or event.'
- inherited brunt (Middle English)
  - derived brundr (Old Norse)
    - inherited *brunstiz (Proto-Germanic), 'burning, heat'
      - derived *brinnaną (Proto-Germanic), 'to burn, to be on fire'
        derived *bʰrénuh₁e- (Pre-Germanic)
        derived *bʰrewh₁- (Proto-Indo-European), 'to boil'
        derived *bʰer- (Proto-Indo-European), 'to bear, carry'
      - suffix *-þiz (Proto-Germanic), 'Forms abstract nouns from verb roots, usually from strong verbs.'
        derived *-tis (Proto-Indo-European), 'Derives abstract/action nouns from verb roots.'

Ancestors

*brunstiz (Proto-Germanic)

Descendants and derived words

at a brunt (English)
at the first brunt (English)
bear the brunt (English)

Sources

Updated August 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris