Where does “keski-ikäisyys” come from?

keski-ikäisyys (Finnish) comes from Finnish keski-ikäinen, from Finnish ikäinen, from Finnish -inen, from Finnish -uus, from Proto-Finnic -uc — -ness, -hood.

keski-ikäisyys (Finnish): middle-agedness quality of being middle-aged

Definitions

  1. middle-agedness quality of being middle-aged

Ancestry of “keski-ikäisyys”, step by step

keski-ikäisyys traces back through two separate lines of ancestry.

via Finnish keski-ikäinen

StepLanguageWordMeaning
1Finnishkeski-ikäinenmiddle-aged
2Finnishikäinen.. old; of one's age; at the age of, aged
3Finnish-inen-like, -ous, -y; -en; Creates adjectives from...
4Finnish-uusForms nouns from adjectives, expressing a quality
5Proto-Finnic-uc-ness, -hood

via Finnish uus

StepLanguageWordMeaning
1FinnishuusAlternative form of uusi
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus