18 entries under unending topic. ×

12
perennial(adjective, continue, stable, constant, enduring)
9
eternal(adjective, pause, endless, enduring, permanent)
6
everlasting(adjective, strong, stable, constant, enduring)
3
continual(adjective, stable, constant, enduring, lasting)
2
ageless(lasting, permanent, everlasting, undying)
2
dateless(lasting, permanent, everlasting, undying)
2
endless(continuous, permanent, unlimited, everlasting, eternal)
2
immemorial(lasting, permanent, everlasting, undying)
2
incessant(absolute, continuous, endless, immense, permanent)
2
timeless(lasting, permanent, everlasting, eternal)
2
unceasing(continuous, lasting, permanent, everlasting, perpetual)
2
undying(adjective, continuous, enduring, lasting, permanent)
2
unremitting(continuous, lasting, permanent, everlasting)
1
continued(continuous, lasting, permanent, everlasting, uninterrupted)
1
forever(stable, constant, enduring, lasting, permanent)
1
indefinite(lasting, permanent, everlasting, undying)
1
termless(lasting, permanent, everlasting, undying)
0
relentless(lasting, permanent, everlasting, undying)
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APASmart Define. (2016). perdurable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/perdurable/thesaurus/synonyms
ChicagoSmart Define. 2016. "perdurable thesaurus" https://smartdefine.org/perdurable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, perdurable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/perdurable/thesaurus/synonyms>.
MLASmart Define. "perdurable thesaurus" 3 March 2016. Web. 25 September 2026. <https://smartdefine.org/perdurable/thesaurus/synonyms>