Etymology

unspontaneous

U1N1S1P3O1N1T1A1N1E1O1U1S1

Today it means: Not spontaneous; halting or rehearsed Full definition →

English spontaneous ← Late Latin spontāneu ← Latin sponte
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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. Latinsponte
  9. Late Latinspontāneu
  10. Englishspontaneous
  11. English todayunspontaneous

From un- + spontaneous.

Etymology from Wiktionary, CC BY-SA 4.0.