Where does “sulen” come from?

sulen (Middle English) comes from Old English sylian, from Proto-Germanic suliwōną, from Proto-Indo-European sūl- — thick liquid, muck.

Ancestry of “sulen”, step by step

StepLanguageWordMeaning
1Old Englishsylianto soil, pollute; to sully; to soil, make dirty;...
2Proto-Germanicsuliwōną—
3Proto-Indo-Europeansūl-thick liquid, muck

Words derived from “sulen”

Every word from Proto-Indo-European sūl- →Every word from Proto-Germanic suliwōną →Every word from Old English sylian →