Where does “köykkyselkä” come from?

köykkyselkä (Finnish) comes from Finnish köykky, from Finnish kyykky, from Finnish kukku, from Proto-Malayo-Polynesian kukuh, from Proto-Austronesian kuSkuS — nail.

köykkyselkä (Finnish): humpback, hunchback

Definitions

  1. humpback, hunchback

Ancestry of “köykkyselkä”, step by step

köykkyselkä traces back through two separate lines of ancestry.

via Finnish köykky

StepLanguageWordMeaning
1Finnishköykkysquat, squatting position
2Finnishkyykkysquat, bended position
3Finnishkukkuheap; part that goes or is left over; Synonym of...
4Proto-Malayo-Polynesiankukuhnail
5Proto-AustronesiankuSkuSnail

via Finnish selkä

StepLanguageWordMeaning
1Finnishselkäback; ridge, spine; watershed area
2Proto-Finnicselkäback; ridge
3Proto-Finno-Permicśelkä—
Every word from Proto-Austronesian kuSkuS →Every word from Proto-Malayo-Polynesian kukuh →Every word from Finnish kukku →