Where does “tsiis” come from?
tsiis (West Frisian) comes from Old Frisian tzīse, from Proto-West Germanic kāsī, from Proto-Germanic kāsijaz, from Latin cāseus, from Proto-Indo-European kwat- — to ferment, become sour; to boil.
tsiis (West Frisian): cheese
Ancestry of “tsiis”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Frisian | tzīse | — |
| 2 | Proto-West Germanic | kāsī | cheese |
| 3 | Proto-Germanic | kāsijaz | — |
| 4 | Latin | cāseus | — |
| 5 | Proto-Indo-European | kwat- | to ferment, become sour; to boil |