Etymology

unprincipled

U1N1P3R1I1N1C3I1P3L1E1D2

Today it means: Lacking moral values. Full definition →

English principled ← 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. Englishprinciple
  9. Englishprincipled
  10. English todayunprincipled

From un- + principled.

Etymology from Wiktionary, CC BY-SA 4.0.