iznimno

1. Croat. (with adjectives) exceptionally; extremely
   Ovo je iznimno važno. — This is extremely important.
   Bila je iznimno ljubazna prema nama. — She was exceptionally kind to us.
2. Croat. as an exception
   Iznimno, ulaz je danas besplatan. — As an exception, admission is free today.

In Serbia the word is izuzetno.