Where does “cos” come from?
cos (Middle English) comes from Old English coss, from Proto-West Germanic koss, from Proto-Germanic kussaz — kiss.
Ancestry of “cos”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old English | coss | kiss |
| 2 | Proto-West Germanic | koss | kiss |
| 3 | Proto-Germanic | kussaz | kiss |