The story
- Proto-Indo-European*per-der.?
- Proto-Indo-European*pér
- Proto-Indo-European*pró
- Proto-Italic*prō
- Latinprō
- Englishpro-
- Proto-Indo-European*leyp-
- Proto-Germanic*lībaną
- Proto-Germanic*lībą
- Proto-West Germanic*līb
- Old Englishlīf
- Middle Englishlyf
- Englishlife
- English todaypro-life
Etymology from Wiktionary, CC BY-SA 4.0.