We don't have synonyms for cavatine yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are palatine, calamine and creatine.
(n) :
Alternative form of cavatina. [(music) An operatic song in slow tempo, either complete in itself or (e.g., in Bellini and Verdi) followed by a faster, more resolute section: hence]
(n) :
Alternative form of cavatina. [(music) An operatic song in slow tempo, either complete in itself or (e.g., in Bellini and Verdi) followed by a faster, more resolute section: hence]