Synonyms|202Antonyms|3|Broader|4Narrower|0Related|189

8 entries under oldness topic. ×

9
firstborn(adjective, age)
7
elder(adjective, rank, post, status, age)
2
antique
1
ancient
1
old
0
of long standing(expression, idiom)
0
time-honored
0
venerable
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APASmart Define. (2015). eldest thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/eldest/thesaurus/synonyms
ChicagoSmart Define. 2015. "eldest thesaurus" https://smartdefine.org/eldest/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, eldest thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/eldest/thesaurus/synonyms>.
MLASmart Define. "eldest thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/eldest/thesaurus/synonyms>