4 entries under eldest topic. ×

3
oldest(adjective, aged)
0
first-born
0
most aged(expression, adjective)
0
primogenital
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APASmart Define. (2016). earliest thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/earliest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earliest thesaurus" https://smartdefine.org/earliest/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, earliest thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/earliest/thesaurus/synonyms>.
MLASmart Define. "earliest thesaurus" 13 March 2016. Web. 25 September 2026. <https://smartdefine.org/earliest/thesaurus/synonyms>