prima

1. (in music) unison; prime
   Na času solfeđa učili smo primu i sekundu. — In solfège class we learned the unison and the second.

2. colloq. (of quality, state) first-rate, great; great
   Kako si? — Prima! — How are you? — Great!
   Ovo je prima roba, nećeš se pokajati. — This is first-rate stuff, you won't regret it.

In the colloquial sense 'great' prima is indeclinable and is used both as an adjective and as an adverb: prima roba, sve je prima.