Etymology

inadvertently

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Today it means: Unintentionally; because of an oversight. Full definition →

Proto-Germanic *līką ← Proto-Indo-European *leyg- ← English inadvertent
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The story

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Italic*n̥-
  4. Medieval Latinin-
  5. Proto-Indo-European*h₂éd
  6. Proto-Italic*ad
  7. Proto-Italic*ad-
  8. Latinad-
  9. Proto-Indo-European*wert-
  10. Proto-Indo-European*wértetor
  11. Proto-Italic*wertō
  12. Latinvertō
  13. Latinadvertō
  14. Medieval Latinadvertēns
  15. Medieval Latininadvertēns
  16. Englishinadvertent
  17. Proto-Indo-European*leyg-
  18. Proto-Germanic*līką
  19. English todayinadvertently

From inadvertent + -ly.

Etymology from Wiktionary, CC BY-SA 4.0.