120 entries under adjective topic. ×

18
long-standing(strain, firmness, labour, hardiness)
18
settled(strain, firmness, labour, hardiness)
18
stabile(strain, firmness, persistent, continuous)
18
unalterable(strain, firmness, persistent, continuous)
13
supported(verb, constant, established, defended)
11
maintained(verb, constant, safe, received)
10
continued(verb, great, spread, deep)
10
continuous(persistent, constant, unyielding, endless)
10
uninterrupted(persistent, constant, continuous, endless)
7
long(time, great, deep, boring)
7
prolonged(verb, great, slow, deep)
7
unceasing(persistent, constant, continuous, endless)
7
upheld(verb, supported, defended, assisted)
6
continual(persistent, constant, continuous, endless)
5
backed(verb, constant, promoted, continued)
5
ceaseless(persistent, constant, continuous, endless)
5
extended(verb, spread, advanced, extensive)
5
interminable(slow, persistent, late, continuous)
4
abiding(persistent, constant, continuous, endless)
4
even(persistent, continuous, endless, relentless)
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APASmart Define. (2015). sustained thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sustained/thesaurus/synonyms
ChicagoSmart Define. 2015. "sustained thesaurus" https://smartdefine.org/sustained/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, sustained thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sustained/thesaurus/synonyms>.
MLASmart Define. "sustained thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/sustained/thesaurus/synonyms>