The story
- Proto-Indo-European*ḱe?
- Proto-Indo-European*ḱóm
- Proto-Italic*kom
- Proto-Italic*kom-
- Latincon-
- Latinco-
- Englishco-
- Latincon-
- Latinputus
- Latinputō
- Latincomputō
- Anglo-Normancounter
- Middle Englishcounten
- Englishcount
- Englishcountability
- English todaycocountability
From co- + countability.
Etymology from Wiktionary, CC BY-SA 4.0.