Where does “Tusheti” come from?

Tusheti (English) comes from Georgian თუშეთი, from Georgian -ეთი, from Proto-Georgian-Zan *-et.

Ancestry of “Tusheti”, step by step

StepLanguageWordMeaning
1GeorgianთუშეთიTusheti
2Georgian-ეთიlocation suffix; geographical suffix
3Proto-Georgian-Zan*-et—
Every word from Proto-Georgian-Zan *-et →Every word from Georgian -ეთი →Every word from Georgian თუშეთი →