relativan

1. relative
   Uspeh je relativan pojam. — Success is a relative concept.
   U gradu je posle izbora zavladao relativan mir. — After the elections, relative calm settled over the city.
2. (in grammar) relative
   Relativna rečenica često počinje rečju „koji”. — A relative clause often begins with the word "koji".

The phrase "Sve je relativno" ("Everything is relative") is very common.