Where does “tosipohja” come from?

tosipohja (Finnish) comes from Finnish pohja, from Proto-Finnic pohja, from Proto-Finno-Permic pošja.

Ancestry of “tosipohja”, step by step

tosipohja traces back through two separate lines of ancestry.

via Finnish pohja

StepLanguageWordMeaning
1Finnishpohjabottom; bed; fundament
2Proto-Finnicpohjabottom; base, foundation; north
3Proto-Finno-Permicpošja—

via Finnish tosi

StepLanguageWordMeaning
1Finnishtositruth, reality, real thing; real-life; true
2Proto-Finnictocitruth
Every word from Proto-Finno-Permic pošja →Every word from Proto-Finnic pohja →Every word from Finnish pohja →