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*ten-
- Proto-Indo-European*tn̥eh₁yéti
- Proto-Italic*tenēō
- Latinteneō
- Latincontineō
- Latincontinēre
- Old Frenchcontenir
- Middle Englishconteinen
- Englishcontain
- Englishcontainable
- English todayuncontainable
From un- + containable.
Etymology from Wiktionary, CC BY-SA 4.0.