mrzak

1. hateful; odious
   To je bio najmrži dan u mom životu. — That was the most hateful day of my life.
   Taj čovek mi je mrzak. — I can't stand that man.
2. colloq. (mrsko mi je + da/inf.) can't be bothered; don't feel like
   Mrsko mi je da ustanem iz kreveta. — I can't be bothered to get out of bed.
   Bilo mu je mrsko da uči za ispit. — He didn't feel like studying for the exam.

Very common construction: mrsko mi je + da/infinitive — "I can't be bothered".