The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*per-der.?
- Proto-Indo-European*pér
- Proto-Indo-European*pró
- Proto-Indo-European*pro-
- Proto-Indo-European*bʰuH-
- Proto-Indo-European*probʰHwós
- Proto-Italic*proβwos
- Proto-Italic*proβos
- Proto-Italic*proβāō
- Latinprobō
- Latinapprobāre
- Old Frenchaprover
- Middle Englishaproven
- Englishapprove
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- English todayapproval
Etymology from Wiktionary, CC BY-SA 4.0.