Etymology

restless

rest·less
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Today it means: Not allowing or affording rest. Full definition →

Middle English restles ← Old English ræstlēas ← Proto-Germanic *lausaz
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The story

  1. Proto-Germanic*rastō
  2. Proto-West Germanic*rastu
  3. Old Englishræst
  4. Proto-Indo-European*lewh₁-
  5. Proto-Indo-European*lewHs-
  6. Proto-Germanic*leusaną
  7. Proto-Germanic*lausaz
  8. Old Englishræstlēas
  9. Middle Englishrestles
  10. English todayrestless

From Middle English restles, restelees, from Old English ræstlēas, equivalent to rest + -less.

Etymology from Wiktionary, CC BY-SA 4.0.