Where does “ukkosenilma” come from?

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

Ancestry of “ukkosenilma”, step by step

ukkosenilma traces back through two separate lines of ancestry.

via Finnish ukkonen

StepLanguageWordMeaning
1Finnishukkonenthunder; thunderstorm
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 Ilma

StepLanguageWordMeaning
1FinnishIlmaair
2Finnish-riUsed to create names of occupations from nouns or...
3Finnish-raForms nouns or adjectives, mostly from nominal...
4Finnish-iA nominal suffix used in eg. ukko → ukki; Used...
5Proto-Uralic-joblique plural
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus