The Bulgarian word for 'Thank you' is:
Blagodaria
However, it is not written like that, but it should be written in cyrillic letters. So this is how it should be written:
благодаря.
Blagodarya!
Formal: Pronounced: bla-go-daria The r is rolled. Informal: Pronounced: mer-cee (mer is pronounced with ā as in taken, late, etc.) The r is rolled.
Blagodariya (french word merci is also used)
Many Thanks
Contemporaneous, colloquial and unconfounded of imagery; no etymology