kurvinski

1. vulg. derog. dirty; lowdown; treacherous
   To je bio kurvinski potez, nikad mu neću oprostiti. — That was a dirty move, I'll never forgive him.
2. vulg. derog. whorish; tarty
   Rekla je da joj se ne sviđa taj kurvinski izgled. — She said she didn't like that tarty look.

3. vulg. derog. treacherously; in a dirty way
   Kurvinski su nas izdali u poslednjem trenutku. — They stabbed us in the back at the last moment.

A coarse word best avoided in polite company.