The story
- Proto-Indo-European*de
- Proto-Indo-European*déh₁
- Proto-Italic*dē
- Latindē
- Latindē-
- Proto-Indo-European*(s)pend-
- Proto-Indo-European*(s)pn̥d-éh₁ye-ti
- Proto-Italic*pendējō
- Proto-Italic*pendēō
- Latinpendeō
- Latindependeō
- Old Frenchdependre
- Middle Englishdependen
- English todaydepend
Inherited from Middle English dependen, from Old French dependre, from Latin dependeō, from dē- + pendeō (“to be suspended, hang”). In this sense, displaced native Old English hangian (“to hang or depend”).
Etymology from Wiktionary, CC BY-SA 4.0.