Where does “tuonnottain” come from?

tuonnottain (Finnish) comes from Finnish tuonnoin, from Finnish tuo, from Proto-Finno-Ugric *töö, from Proto-Uralic te — you.

Ancestry of “tuonnottain”, step by step

StepLanguageWordMeaning
1Finnishtuonnoin—
2Finnishtuothat; Third-person singular indicative present...
3Proto-Finno-Ugric*töö—
4Proto-Uralicteyou
Every word from Proto-Uralic te →Every word from Proto-Finno-Ugric *töö →Every word from Finnish tuo →