svojevoljno

1. voluntarily; of one's own free will
   Svojevoljno je napustio klub posle pet godina. — He left the club of his own free will after five years.
   Niko je nije terao, došla je svojevoljno. — Nobody forced her; she came voluntarily.
2. wilfully; arbitrarily
   Direktor je svojevoljno promenio pravila bez dogovora. — The director arbitrarily changed the rules without consulting anyone.