Synonyms|126Antonyms|61|Broader|0Narrower|0Related|244
0
changeless
0
continuance
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continuant
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day-long
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diuturnal
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duration
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familiar(established, long-established)
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firm(familiar, established, long-established)
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hardened(familiar, established, confirmed, chronic, long-established)
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haunting(persistent, lasting, remaining)
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intransmutable
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invariable
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irreversible
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long-established(familiar, established)
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longer
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longeval
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longwearing
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macrobiotic
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of long-standing(expression, idiom, diuturnity)
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of long duration(expression, idiom, diuturnity)
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APASmart Define. (2015). lifelong thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lifelong/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifelong thesaurus" https://smartdefine.org/lifelong/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, lifelong thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lifelong/thesaurus/synonyms>.
MLASmart Define. "lifelong thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/lifelong/thesaurus/synonyms>