Etymology

unsatisfactory

U1N1S1A1T1I1S1F4A1C3T1O1R1Y4

Today it means: Inadequate, substandard or not satisfactory. Full definition →

English satisfactory ← 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. Englishsatisfactory
  9. English todayunsatisfactory

From un- + satisfactory.

Etymology from Wiktionary, CC BY-SA 4.0.