Synonyms|257Antonyms|80|Broader|2Narrower|0Related|279
3
great
3
indefatigable(adjective, continuous)
3
long-lived
3
monotonous(adjective, constant, abundant, continuous, unrestrained)
3
never-dying
3
steady(adjective, continuous)
3
sustained
2
changeless
2
classic
2
deep-rooted(adjective, permanent, long-term, lifelong)
2
evergreen
2
fadeless
2
ineradicable
2
lifelong(permanent, recurrent, perpetual, long-term, returning)
2
long-lasting(adjective, continuous, enduring, lasting, permanent)
2
perdurable(continuous, enduring, lasting, permanent, eternal)
2
unbroken(adjective, constant, abundant, continuous, unrestrained)
2
unchangeable(adjective, continuous)
2
uninterrupted(constant, abundant, unrestrained, endless, immense)
2
unkillable
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APASmart Define. (2016). undying thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undying/thesaurus/synonyms
ChicagoSmart Define. 2016. "undying thesaurus" https://smartdefine.org/undying/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, undying thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undying/thesaurus/synonyms>.
MLASmart Define. "undying thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/undying/thesaurus/synonyms>