The story
- Proto-Indo-European*preyH-
- Proto-Indo-European*priHós
- Proto-Germanic*frijōną
- Proto-Germanic*frijōndz
- Proto-West Germanic*friund
- Old Englishfrēond
- Middle Englishfrend
- Englishfriend
- Old Englishslyppe
- Old English*sloppe
- Middle English*sloppe?
- Englishslop
- English todayfriendslop
Etymology from Wiktionary, CC BY-SA 4.0.