| 1 | Latvian | slinkt | to creep, to crawl, to go slowly |
| 2 | Proto-Balto-Slavic | slink- | — |
| 3 | Proto-Indo-European | slenk- | to turn; wind; twist; to turn, to twist, to wind;... |
| 4 | Proto-Indo-European | sel- | dwelling; piece of wood; beam, post, balk, board,... |
| 5 | Proto-Indo-European | ser- | to flow; to guard; to bind, to tie together |