usvojiti

1. (of a decision, law) to adopt; to pass
   Skupština je juče usvojila novi zakon. — Parliament passed the new law yesterday.
   Predlog je usvojen većinom glasova. — The proposal was adopted by a majority vote.
2. (of a child) to adopt
   Usvojili su devojčicu iz doma. — They adopted a little girl from a children's home.
3. (of knowledge, habits) to acquire; to take on
   Deca brzo usvoje novi jezik. — Children pick up a new language quickly.
   Usvojio je navike svojih kolega. — He took on his colleagues' habits.
4. (of an animal) to adopt
   Usvojili smo psa iz azila. — We adopted a dog from a shelter.

In the sense 'to adopt a child' Croatian uses posvojiti; in Serbia: usvojiti.