Where does “hämyisä” come from?

hämyisä (Finnish) comes from Finnish hämy, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

Ancestry of “hämyisä”, step by step

StepLanguageWordMeaning
1Finnishhämytwilight, gloom
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns
Every word from Proto-Finnic -u →Every word from Finnish -u →Every word from Finnish hämy →