impresivno

1. impressively
   Grad izgleda impresivno noću. — The city looks impressive at night.
   Nastupila je impresivno. — She performed impressively.

The form coincides with the neuter of the adjective impresivan: in «To je impresivno!» ('That's impressive!') it is a predicative adjective, whereas the adverb modifies a verb: nastupiti impresivno.