10 entries under immutable topic. ×

3
timeless(vast, lasting, permanent, everlasting, eternal)
3
unceasing(lasting, permanent, everlasting, unending, perpetuity)
1
ageless(fixed, lasting, permanent, unchangeable, everlasting)
1
continued(lasting, permanent, everlasting, unending, undying)
1
dateless(lasting, permanent, everlasting, unending, undying)
1
immemorial(vast, lasting, permanent, everlasting, unending)
1
indefinite(lasting, permanent, everlasting, unending, undying)
1
relentless(lasting, permanent, everlasting, unending, undying)
1
termless(vast, lasting, permanent, everlasting, unending)
1
unremitting(lasting, permanent, everlasting, unending, undying)
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APASmart Define. (2015). unfading thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unfading/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfading thesaurus" https://smartdefine.org/unfading/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unfading thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unfading/thesaurus/synonyms>.
MLASmart Define. "unfading thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/unfading/thesaurus/synonyms>