Synonyms|63Antonyms|20|Broader|1Narrower|5Related|30
10
sister(noun, companion, friend, mate, comrade)
4
babe(informal, noun)
2
brother(companion, friend, mate, comrade, sister)
2
sibling
1
son
1
amiga(companion, friend, mate, comrade, sister)
1
amigo(companion, friend, mate, comrade, sister)
1
aunt
1
baby
1
blood brother
1
boon companion(expression, companion, friend, mate, comrade)
1
bosom buddy(expression, companion, friend, mate, comrade)
1
brethren
1
bub
1
bud
1
buddy
1
connate(companion, friend, mate, comrade, sister)
1
country cousin
1
cousin
1
cuz(companion, friend, mate, comrade, sister)
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APASmart Define. (2015). sis thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sis/thesaurus/synonyms
ChicagoSmart Define. 2015. "sis thesaurus" https://smartdefine.org/sis/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, sis thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sis/thesaurus/synonyms>.
MLASmart Define. "sis thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/sis/thesaurus/synonyms>