neobavezan

1. optional; not compulsory
   Ovaj kurs je neobavezan za studente prve godine. — This course is optional for first-year students.
   Prisustvo na sastanku je neobavezno. — Attending the meeting is optional.
2. (of talk, relationships) casual; non-committal
   Uz kafu smo vodili neobavezan razgovor. — We had a casual chat over coffee.
   Ona traži vezu, a ne nešto neobavezno. — She wants a relationship, not something casual.