55 entries under endless topic. ×

63
persistent(adjective, strain, firmness, constant, continuous)
38
firm(adjective, strain, firmness, persistent, continuous)
38
stable(adjective, strain, firmness, persistent, continuous)
36
consistent(adjective, strain, firmness, persistent, continuous)
36
unfluctuating(adjective, strain, firmness, persistent, continuous)
25
constant(adjective, strain, firmness, persistent, continuous)
23
lasting(adjective, great, strain, deep, high)
23
perpetual(adjective, strain, firmness, persistent, constant)
22
steady(adjective, strain, firmness, persistent, continuous)
21
enduring(adjective, great, strain, deep, high)
20
steadfast(adjective, strain, firmness, persistent, continuous)
19
permanent(adjective, strain, firmness, persistent, continuous)
18
invariable(adjective, strain, firmness, persistent, continuous)
18
stabile(adjective, strain, firmness, persistent, continuous)
18
unalterable(adjective, strain, firmness, persistent, continuous)
10
continuous(adjective, persistent, constant, unyielding)
10
uninterrupted(adjective, persistent, constant, continuous)
7
unceasing(adjective, persistent, constant, continuous)
6
continual(adjective, persistent, constant, continuous)
5
ceaseless(adjective, persistent, constant, continuous)
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APASmart Define. (2015). sustained thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sustained/thesaurus/synonyms
ChicagoSmart Define. 2015. "sustained thesaurus" https://smartdefine.org/sustained/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, sustained thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sustained/thesaurus/synonyms>.
MLASmart Define. "sustained thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/sustained/thesaurus/synonyms>