The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*d(w)is-
- Proto-Italic*dis-
- Latindis-
- Old Frenchdes-
- Latindis-
- Middle Englishdis-
- Englishdis-
- 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
- English todaydisapprove
Etymology from Wiktionary, CC BY-SA 4.0.