| sissy | |
| stepchild | |
| stepparent(noun, connection, relation, kin, relative) | |
| stepsister(noun, connection, relation, kin, relative) | |
| analog(noun, relative, uncle, sib) | |
| analogue(noun, relative, uncle, sib) | |
| blood-relationship(noun, relative, uncle, sib) | |
| blood relationship(noun, expression, relative, uncle, sib) | |
| chum | |
| comrade | |
| consanguinity(noun, relative, uncle, sib) | |
| crony | |
| daughter-in-law | |
| family member | |
| family tie(noun, expression, relative, uncle, sib) | |
| filiation(noun, relative, uncle, sib) | |
| grandparent(noun, relative, father, mother, folk) | |
| in-law(noun, relative, father, mother, uncle) | |
| kin | |
| kindredship(noun, relative, uncle, sib) |
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| APA | Smart Define. (2015). stepbrother thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stepbrother/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stepbrother thesaurus" https://smartdefine.org/stepbrother/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, stepbrother thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stepbrother/thesaurus/synonyms>. |
| MLA | Smart Define. "stepbrother thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/stepbrother/thesaurus/synonyms> |