The story
- Proto-Indo-European*ḱe?
- Proto-Indo-European*ḱóm
- Proto-Italic*kom
- Proto-Italic*kom-
- Latincon-
- Latinhaereō
- Latincohaereō
- English todaycohere
Borrowed from Latin cohaereō (“cohere, cling (closely) together, harmonise, be consistent (with), be in agreement with”).
Etymology from Wiktionary, CC BY-SA 4.0.