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*ḱe?
- Proto-Indo-European*ḱóm
- Proto-Italic*kom
- Proto-Italic*kom-
- Latincon-
- Proto-Indo-European*peh₂-der.?
- Latinpānis
- Proto-West Germanic*gahlaibō
- Late Latincompāniō
- Old Frenchcompaignon
- Middle Englishcompanion
- Englishcompanion
- Englishcompanionable
- English todayuncompanionable
From un- + companionable.
Etymology from Wiktionary, CC BY-SA 4.0.