Slavic monarch, once (4)
I believe the answer is:
tsar
(Other definitions for tsar that I've seen before include "Supreme authority" , "specific authority" , "Despot" , "Tyrant" , "Person in charge" .)
I believe the answer is:
tsar
(Other definitions for tsar that I've seen before include "Supreme authority" , "specific authority" , "Despot" , "Tyrant" , "Person in charge" .)