Where does “ykköspuku” come from?

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

ykköspuku (Finnish): one's best or finest outfit or suit

Definitions

  1. one's best or finest outfit or suit

Ancestry of “ykköspuku”, step by step

ykköspuku traces back through two separate lines of ancestry.

via Finnish ykkönen

StepLanguageWordMeaning
1Finnishykkönenone; unit, the number one; first
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 puku

StepLanguageWordMeaning
1Finnishpukusuit set of clothes to be worn together, now especially a man's matching jacket and trousers
2Zulumpuku
3Proto-Bantu*pʊ́kʊ̀rat, mouse
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus