Where does “huokaisu” come from?

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

Ancestry of “huokaisu”, step by step

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