Where does “kerto-” come from?

kerto- (Finnish) comes from Finnish kerrata, from Finnish kerta, from Proto-Finnic kerta, from Proto-Indo-European kert-, from Proto-Turkic *keŕ- — to travel, tour.

Ancestry of “kerto-”, step by step

StepLanguageWordMeaning
1FinnishkerrataTo repeat or reread
2Finnishkertatime, occasion; time; times; also once, when the...
3Proto-Finnickertatime
4Proto-Indo-Europeankert-times; to weave, twist together; time
5Proto-Turkic*keŕ-to travel, tour

Words derived from “kerto-”

Every word from Proto-Turkic *keŕ- →Every word from Proto-Indo-European kert- →Every word from Proto-Finnic kerta →