Etymology

unalterable

U1N1A1L1T1E1R1A1B3L1E1

Today it means: Incapable of being altered, or of changing. Full definition →

English alterable ← Middle English un- ← Old English un-
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The story

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Germanic*un-
  4. Proto-West Germanic*un-
  5. Old Englishun-
  6. Middle Englishun-
  7. Englishun-
  8. Englishalter
  9. Englishalterable
  10. English todayunalterable

From un- + alterable.

Etymology from Wiktionary, CC BY-SA 4.0.