5 entries under older topic. ×

2
first-born(noun, adjective, senior, elder)
0
most senior
0
of a former period(expression, adjective, idiom)
0
of an earlier time(expression, adjective, idiom)
0
top-level
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APASmart Define. (2015). firstborn thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/firstborn/thesaurus/synonyms
ChicagoSmart Define. 2015. "firstborn thesaurus" https://smartdefine.org/firstborn/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, firstborn thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/firstborn/thesaurus/synonyms>.
MLASmart Define. "firstborn thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/firstborn/thesaurus/synonyms>