The story
- Proto-Indo-European*sekʷ-
- Proto-Indo-European*sokʷéh₂
- Proto-Indo-European*sokʷh₂ṓy
- Proto-Indo-European*sokʷyós
- Proto-Italic*sokjos
- Latinsokios
- Latinsocius
- Englishsocio-
- Proto-Indo-European*kʷelh₁-
- Proto-Indo-European*kʷélh₁eti
- Proto-Italic*kʷelō
- Latincolō
- Latincultūra
- Middle Frenchculture
- Englishculture
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishcultural
- Englishsociocultural
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- English todaysocioculturally
By surface analysis, sociocultural + -ly, or, by surface analysis, socio- + culture + -ally.
Etymology from Wiktionary, CC BY-SA 4.0.