uzrujavati

1. (uzrujavati se) to get upset; to get worked up
   Nemoj da se uzrujavaš zbog sitnica. — Don't get upset over little things.
   Uvek se uzrujava kad kasni na posao. — He always gets worked up when he's late for work.
2. (someone) to upset; to agitate
   Ne uzrujavaj je pred ispit. — Don't upset her before the exam.
   Takve vesti me uvek uzrujavaju. — News like that always upsets me.

Mostly used with se; the cause is expressed with zbog + genitive.