Where does “Teișanu” come from?

Teișanu (Romanian) comes from Westrobothnian teis, from English theist, from English -ist, from Old French -iste, from Latin -ista, from Ancient Greek -ιστής, from Ancient Greek -τής, from Proto-Hellenic -tās.

Ancestry of “Teișanu”, step by step

StepLanguageWordMeaning
1Westrobothnianteis
2EnglishtheistOne who believes in the existence of a god or...
3English-istAdded to words to form nouns denoting
4Old French-iste
5Latin-ista-ist; one who practises or believes
6Ancient Greek-ιστήςAlternative form of -τής; -ist
7Ancient Greek-τήςAppended to verbs to form agent nouns
8Proto-Hellenic-tās
Every word from Proto-Hellenic -tāsEvery word from English -istEvery word from Ancient Greek -τής