The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Germanic*un-
- Proto-West Germanic*un-
- Old Englishun-
- Middle Englishun-
- Englishun-
- Proto-Indo-European*h₁ep-
- Proto-Indo-European*h₁éps
- Proto-Indo-European*h₁épi
- Proto-Indo-European*h₁pi
- Proto-Germanic*bi
- Proto-Germanic*bi-
- Proto-West Germanic*bi-
- Old Englishbe-
- Middle Englishbi-
- Englishbe-
- Proto-Indo-European*preyH-
- Proto-Indo-European*priHós
- Proto-Germanic*frijōną
- Proto-Germanic*frijōndz
- Proto-West Germanic*friund
- Old Englishfrēond
- Middle Englishfrend
- Englishfriend
- Englishbefriend
- Englishbefriendable
- English todayunbefriendable
From un- + befriendable.
Etymology from Wiktionary, CC BY-SA 4.0.