Etymology

unfailing

U1N1F4A1I1L1I1N1G2

Today it means: inexhaustible Full definition →

English failing ← 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. Englishfailing
  9. English todayunfailing

From un- + failing.

Etymology from Wiktionary, CC BY-SA 4.0.