Where does “illantorkku” come from?

illantorkku (Finnish) comes from Finnish ilta, from Finnish -nen, from Finnish -inen, from Finnish -uus, from Proto-Finnic -uc — -ness, -hood.

Ancestry of “illantorkku”, step by step

illantorkku traces back through two separate lines of ancestry.

via Finnish ilta

StepLanguageWordMeaning
1Finnishiltaevening
2Finnish-nenForms diminutives nouns or terms expressing...
3Finnish-inen-like, -ous, -y; -en; Creates adjectives from...
4Finnish-uusForms nouns from adjectives, expressing a quality
5Proto-Finnic-uc-ness, -hood

via Finnish torkku

StepLanguageWordMeaning
1Finnishtorkkunap, snooze; sleepy
2Finnishtorkkuato snooze, doze, drowse
3Finnish-uaForms stative or inchoative intransitive verbs...
4Proto-Finnic-üdäkForms mainly passive or anticausative verbs
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus