45 entries under permanent topic. ×

12
lasting(adjective, calm, strong, tough, continue)
12
perennial(adjective, continue, stable, constant, enduring)
11
perpetual(adjective, stable, constant, endless, enduring)
10
enduring(adjective, calm, strong, continue, substantial)
9
eternal(adjective, pause, endless, enduring)
9
indestructible(adjective, strong, tough, stable, constant)
9
stable(adjective, tough, fixed, sturdy, constant)
6
everlasting(adjective, strong, stable, constant, enduring)
6
long-lived(adjective, continue, continuing)
6
persistent(adjective, continue, sturdy, constant, enduring)
5
constant(adjective, calm, strong, substantial, stable)
4
imperishable(adjective, stable, constant, enduring, lasting)
3
continual(adjective, stable, constant, enduring, lasting)
3
continuing(adjective, continue, fundamental, operating)
3
persisting(adjective, continuing, long-term, lifelong)
2
ageless(lasting, everlasting, unending, undying)
2
dateless(lasting, everlasting, unending, undying)
2
endless(continuous, unlimited, everlasting, eternal)
2
immemorial(lasting, everlasting, unending, undying)
2
immutable(calm, strong, solid, substantial, constant)
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APASmart Define. (2016). perdurable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/perdurable/thesaurus/synonyms
ChicagoSmart Define. 2016. "perdurable thesaurus" https://smartdefine.org/perdurable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, perdurable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/perdurable/thesaurus/synonyms>.
MLASmart Define. "perdurable thesaurus" 3 March 2016. Web. 21 September 2026. <https://smartdefine.org/perdurable/thesaurus/synonyms>