- Definitions|2
- Thesaurus|147
- Abbreviations|0
7 entries under expression topic. ×
| first child | |
| first principle | |
| illegitimate child | |
| most senior | |
| of a former period(adjective, idiom, older) | |
| of an earlier time(adjective, idiom, older) | |
| of long standing(idiom, oldness) |
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| APA | Smart Define. (2015). firstborn thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/firstborn/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "firstborn thesaurus" https://smartdefine.org/firstborn/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, firstborn thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/firstborn/thesaurus/synonyms>. |
| MLA | Smart Define. "firstborn thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/firstborn/thesaurus/synonyms> |