Etymology

bullish

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Today it means: Having a muscular physique, built ‘like a bull’. Full definition →

English bull ← Middle English bole ← Old Norse boli
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The story

  1. Proto-Indo-European*bʰel-
  2. Proto-Germanic*bulô
  3. Old Englishbula
  4. Proto-Germanic*bulô
  5. Old Norseboli
  6. Middle Englishbole
  7. Englishbull
  8. English todaybullish

From bull + -ish.

Etymology from Wiktionary, CC BY-SA 4.0.