120 entries under adjective topic. ×

4
fixed(verb, persistent, constant, continuous)
4
free burning(expression, idiom)
4
incessant(persistent, constant, continuous, unyielding)
4
perennial(persistent, enduring, lasting, recurrent)
4
protracted(verb, great, slow, deep)
4
unchanging(persistent, constant, continuous, endless)
4
uniform(persistent, continuous, endless, relentless)
4
unremitting(persistent, constant, continuous, unyielding)
4
unvarying(persistent, continuous, endless, relentless)
3
running(great, deep, high, remote)
2
chronic(persistent, constant, continuous, endless)
2
endless(persistent, constant, continuous, relentless)
2
immutable(persistent, continuous, endless, relentless)
2
level
2
never-ending(constant, continuous, continual, recurrent)
2
nonstop(persistent, constant, continuous, unyielding)
2
regular(persistent, constant, continuous, endless)
2
unbroken(persistent, constant, continuous, unyielding)
2
unchanged
1
avowed
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APASmart Define. (2015). sustained thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sustained/thesaurus/synonyms
ChicagoSmart Define. 2015. "sustained thesaurus" https://smartdefine.org/sustained/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, sustained thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sustained/thesaurus/synonyms>.
MLASmart Define. "sustained thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/sustained/thesaurus/synonyms>