Etymology

truism

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Today it means: A self-evident or obvious truth. Full definition →

English true ← Middle English trewe ← Old English trīewe
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The story

  1. Proto-Indo-European*drewH-
  2. Proto-Germanic*triwwiz
  3. Proto-West Germanic*triuwī
  4. Old Englishtrīewe
  5. Middle Englishtrewe
  6. Englishtrue
  7. English todaytruism

From true + -ism.

Etymology from Wiktionary, CC BY-SA 4.0.