The story
- Proto-Indo-European*h₁éǵʰ
- Proto-Indo-European*h₁éǵʰs
- Proto-Italic*eks
- Latinex
- Latinex-
- Latingrex
- Latinēgregius
- English todayegregious
From Latin ēgregius, from e- (“out of”), + grex (“flock”), + English adjective suffix -ous, from Latin suffix -osus (“full of”); reflecting the positive connotations of "standing out from the flock".
Etymology from Wiktionary, CC BY-SA 4.0.