| sib(noun, connection, relation, kin, relative) | |
| sibling | |
| sister-in-law(noun, connection, relation, kin, relative) | |
| stepbrother(noun, connection, relation, kin, relative) | |
| stepsister(noun, connection, relation, kin, relative) | |
| uncle(noun, connection, relation, kin, relative) | |
| stepparent(noun, connection, relation, kin, relative) | |
| agnate(noun, connection, relation, kin, relative) | |
| brother-in-law(noun, connection, relation, kin, relative) | |
| father-in-law(noun, connection, relation, kin, relative) | |
| stepdaughter | |
| stepfather | |
| stepmother | |
| analog(noun, relative, uncle, sib) | |
| analogue(noun, relative, uncle, sib) | |
| blood-relationship(noun, relative, uncle, sib) | |
| blood relationship(noun, expression, relative, uncle, sib) | |
| consanguinity(noun, relative, uncle, sib) | |
| family member | |
| family tie(noun, expression, relative, uncle, sib) |
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| APA | Smart Define. (2015). mother-in-law thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/mother-in-law/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "mother-in-law thesaurus" https://smartdefine.org/mother-in-law/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2015, mother-in-law thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/mother-in-law/thesaurus/synonyms>. |
| MLA | Smart Define. "mother-in-law thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/mother-in-law/thesaurus/synonyms> |