sly in Bulgarian
sly in Bulgarian
кова́рен
Artfully cunning; secretly mischievous; wily.
лука́в
Artfully cunning; secretly mischievous; wily.
хи́тър
Artfully cunning; secretly mischievous; wily.
потаен
(having a positive connotation) Dexterous in performing an action, so as to escape notice
изкусен
Done with, and marked by, artful and dexterous secrecy; subtle