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*kap-
- Proto-Indo-European*kapyéti
- Proto-Italic*kapjō
- Latincapiō
- Latinaccipiō
- Latinacceptāre
- Old Frenchaccepter
- Middle Frenchacceptance
- Old Frenchaccepterder.?
- Middle Englishaccepten
- Englishaccept
- Englishacceptance
- English todaydisacceptance
From dis- + acceptance, perhaps under the influence of disapprove, disapproval.
Etymology from Wiktionary, CC BY-SA 4.0.