How do you say sister in Italian?
— sorella (f)

Related synonyms for sister in Italian
babybambino (m); bambina (f); bimbo (m); bimba (f); bebè (m)
Generic synonyms for sister in Italian
girlbambina (f); (f)
Antonyms for sister in Italian
brotherfratello (m) (1,2,3,4), confratello (m) (3,4)