The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*d(w)is-
- Proto-Italic*dis-
- Latindis-
- Old Frenchdes-
- Middle Frenchdes-
- Frenchdés-
- Proto-Indo-European*h₃er-
- Proto-Italic*oriōr
- Latinorior
- Latinorientem
- Frenchorient
- Frenchorienter
- Frenchdésorienter
- English todaydisorient
Borrowed from French désorienter.
Etymology from Wiktionary, CC BY-SA 4.0.