Synonyms|79Antonyms|12|Broader|0Narrower|0Related|202

32 entries under adjective topic. ×

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immemorial
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ingrained
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inherent
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inner
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inveterate
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livelong
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long-time
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longest
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longtime
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older
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past
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venerable
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APASmart Define. (2013). longstanding thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/longstanding/thesaurus/synonyms
ChicagoSmart Define. 2013. "longstanding thesaurus" https://smartdefine.org/longstanding/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2013, longstanding thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/longstanding/thesaurus/synonyms>.
MLASmart Define. "longstanding thesaurus" 27 June 2013. Web. 24 September 2026. <https://smartdefine.org/longstanding/thesaurus/synonyms>