Synonyms|67Antonyms|0|Broader|3Narrower|0Related|11
4
half-brother
4
half brother(noun, expression, idiom)
2
aunt(noun, connection, relation, kin, relative)
2
blood brother(expression, idiom)
2
brother
2
brother-in-law(noun, connection, relation, kin, relative)
2
buddy
2
cousin
2
father
2
niece(noun, connection, relation, kin, relative)
2
sister
2
sister-in-law(noun, connection, relation, kin, relative)
2
son
2
stepmother
2
uncle(noun, connection, relation, kin, relative)
1
agnate(noun, connection, relation, kin, relative)
1
blood
1
brethren
1
bub
1
bud
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APASmart Define. (2015). stepbrother thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/stepbrother/thesaurus/synonyms
ChicagoSmart Define. 2015. "stepbrother thesaurus" https://smartdefine.org/stepbrother/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, stepbrother thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/stepbrother/thesaurus/synonyms>.
MLASmart Define. "stepbrother thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/stepbrother/thesaurus/synonyms>