How do you say sister in Spanish?
— hermana (f)

Related synonyms for sister in Spanish
babybebé (m); nene (m); niño (m); niña (f); bebe (m); guagua (f)
Generic synonyms for sister in Spanish
girlniña (f); muchacha (f); chica (f)
Antonyms for sister in Spanish
brotherhermano (m)