11 entries under immutable topic. ×

6
timeless(adjective, lasting, permanent, everlasting, eternal)
5
ageless(adjective, lasting, permanent, everlasting, unending)
5
unceasing(adjective, lasting, permanent, everlasting, unending)
3
dateless(lasting, permanent, everlasting, unending, undying)
3
unremitting(lasting, permanent, everlasting, unending, undying)
3
without end(expression, lasting, permanent, everlasting, unending)
2
immemorial(lasting, permanent, everlasting, unending, undying)
2
indefinite(lasting, permanent, everlasting, unending, undying)
1
continued(lasting, permanent, everlasting, unending, undying)
1
termless(lasting, permanent, everlasting, unending, undying)
0
relentless(lasting, permanent, everlasting, unending, undying)
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APASmart Define. (2015). indestructible thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/indestructible/thesaurus/synonyms
ChicagoSmart Define. 2015. "indestructible thesaurus" https://smartdefine.org/indestructible/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, indestructible thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/indestructible/thesaurus/synonyms>.
MLASmart Define. "indestructible thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/indestructible/thesaurus/synonyms>