Where does “siisteys” come from?
siisteys (Finnish) comes from Finnish siisti, from Russian чи́стый, from Old East Slavic чистъ, from Proto-Slavic čistъ, from Proto-Balto-Slavic skīstas, from Proto-Indo-European skidtos, from Proto-Indo-European (s)keyd-.
siisteys (Finnish): cleanness
Ancestry of “siisteys”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Finnish | siisti | clean, neat; cool, wicked; Third-person singular... |
| 2 | Russian | чи́стый | clean |
| 3 | Old East Slavic | чистъ | pure; clean |
| 4 | Proto-Slavic | čistъ | clean, pure |
| 5 | Proto-Balto-Slavic | skīstas | — |
| 6 | Proto-Indo-European | skidtos | — |
| 7 | Proto-Indo-European | (s)keyd- | — |