21 entries under permanent topic. ×

23
immortal(adjective, constant, continuous, endless, indefinite)
17
ageless(adjective, change, endless, enduring, lasting)
14
dateless(adjective, change, steady, constant, lasting)
9
unceasing(adjective, continue, steady, constant, continuous)
8
lasting(adjective, vast, everlasting, eternal)
7
perennial(adjective, constant, endless, indefinite, lasting)
7
abiding(adjective, lasting, everlasting, eternal)
6
immemorial(adjective, vast, lasting, infinite)
5
imperishable(adjective, vast, lasting, everlasting)
5
indestructible(adjective, lasting, everlasting, eternal)
5
unremitting(adjective, continue, steady, constant, lasting)
4
persistent(adjective, continue, steady, constant, continuous)
3
immutable(adjective, lasting, everlasting, unending)
3
unfading(vast, lasting, everlasting, eternal)
3
forever(adjective, vast, lasting, everlasting)
3
indefinite(adjective, lasting, everlasting, eternal)
3
without end(expression, adjective, vast, lasting)
2
continued(adjective, steady, stable, regular, lasting)
2
perdurable(lasting, everlasting, eternal, unending)
2
termless(adjective, vast, lasting, infinite)
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APASmart Define. (2016). timeless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/timeless/thesaurus/synonyms
ChicagoSmart Define. 2016. "timeless thesaurus" https://smartdefine.org/timeless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, timeless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/timeless/thesaurus/synonyms>.
MLASmart Define. "timeless thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/timeless/thesaurus/synonyms>