Etymology

nonintentional

non·in·tent·ion·al
N1O1N1I1N1T1E1N1T1I1O1N1A1L1

Today it means: Synonym of unintentional. Full definition →

English intentional ← Medieval Latin intentiōnālis ← Proto-Indo-European *h₂élisder.?
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The story

  1. Proto-Indo-European*né
  2. Proto-Germanic*ne
  3. Proto-Indo-European*ís?
  4. Proto-Indo-European*h₁óynos
  5. Proto-Germanic*ainaz
  6. Proto-Germanic*nainaz
  7. Proto-West Germanic*nain
  8. Old Englishnān
  9. Middle Englishnon
  10. Old Englishnān
  11. Old Englishnān-
  12. Middle Englishnon-
  13. Englishnon-
  14. Proto-Indo-European*h₁én
  15. Proto-Italic*en
  16. Proto-Italic*en-
  17. Latinin-
  18. Latintendō
  19. Latinintendō
  20. Medieval Latinintentiō
  21. Proto-Indo-European*h₂el-
  22. Proto-Indo-European*h₂élisder.?
  23. Medieval Latinintentiōnālis
  24. Englishintentional
  25. English todaynonintentional

From non- + intentional.

Etymology from Wiktionary, CC BY-SA 4.0.