Etymology

unproductive

U1N1P3R1O1D2U1C3T1I1V4E1

Today it means: Not productive; useless; fruitless. Full definition →

English productive ← Late Latin prōductīvus ← Latin prōdūcō
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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. Proto-Indo-European*per-der.?
  9. Proto-Indo-European*pér
  10. Proto-Indo-European*pró
  11. Proto-Indo-European*pro-
  12. Proto-Italic*pro-
  13. Latinprō-
  14. Proto-Indo-European*dewk-
  15. Proto-Indo-European*déwkti
  16. Proto-Italic*doukō
  17. Latindūcō
  18. Latinprōdūcō
  19. Late Latinprōductīvus
  20. Englishproductive
  21. English todayunproductive

From un- + productive.

Etymology from Wiktionary, CC BY-SA 4.0.