dobrovoljac

1. volunteer
   Ima li dobrovoljaca da pomognu oko selidbe? — Any volunteers to help with the move?
   Dobrovoljci su delili hranu ugroženima. — Volunteers handed out food to people in need.
2. (in the army, in war) volunteer soldier
   Moj pradeda je bio dobrovoljac u Prvom svetskom ratu. — My great-grandfather was a volunteer in the First World War.