nezreo

1. (of fruit) unripe
   Nemoj jesti nezrele šljive, zaboleće te stomak. — Don't eat unripe plums, you'll get a stomachache.
2. (of a person, behaviour) immature
   On je još previše nezreo za brak. — He's still too immature for marriage.
   To je bio veoma nezreo potez. — That was a very immature move.