13
female sibling(expression, family, kin, kinship, kinsperson)
12
nun(noun, person, woman, nurse, clergy)
11
sissy(noun, family, kin, kinship, kinsperson)
10
sis(noun, companion, friend, mate, comrade)
10
sibling(noun, sister, consanguinity, brother)
10
sib(noun, family, kin, kinship, consanguinity)
9
nurse(noun, person, remedy, woman, novice)
9
relative(noun, kinship, consanguinity, sibling)
9
abbess(noun, person, woman, nurse, clergy)
9
conventual(noun, person, woman, nurse, novice)
8
kin(noun, family, kinship, sibling, kinsperson)
8
relation(noun, kinship, consanguinity, sibling)
8
twin(noun, family, similarity, kin, kinship)
8
family member(expression, family, kin, kinship, kinsperson)
8
feminist(noun, person, slang, ideology, feminism)
7
kinfolk(noun, family, kin, kinship, consanguinity)
7
cousin(noun, friend, kinship, consanguinity)
7
female siblings(expression, family, kin, kinship, kinsperson)
7
lay sister(expression, family, kin, kinship, kinsperson)
7
nursing sister(expression, person, woman, nurse, novice)
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APASmart Define. (2016). sister thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sister/thesaurus/synonyms
ChicagoSmart Define. 2016. "sister thesaurus" https://smartdefine.org/sister/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, sister thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sister/thesaurus/synonyms>.
MLASmart Define. "sister thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/sister/thesaurus/synonyms>