nepošten

1. (of a person or act) dishonest
   Ispostavilo se da je bio nepošten prema partneru. — It turned out he had been dishonest with his partner.
   Ne želim da radim sa nepoštenim ljudima. — I don't want to work with dishonest people.
2. (of a game, conditions) unfair
   To je nepošteno, on je počeo pre znaka! — That's unfair, he started before the signal!
   Sudija je doneo nepoštenu odluku. — The referee made an unfair call.

The neuter nepošteno is common as an exclamation: "To je nepošteno!" – "That's not fair!"