455 entries under adjective topic. ×

15
continuing(strong, continue, firm, certain)
15
resolved(strong, flat, firm, certain)
14
endless(continue, certain, determined, steady)
14
interminable(continue, determined, steady, constant)
14
unending(continue, steady, constant, current)
14
unfailing(strong, continue, firm, certain)
14
untiring(quiet, understanding, gentle, determined)
13
ceaseless(continue, certain, steady, regular)
13
chronic(continue, usual, regular, routine)
13
immovable(determined, stable, fixed, resolute)
13
unflinching(strong, flat, firm, certain)
13
unswerving(strong, tough, firm, determined)
12
diligent(resolute, persevering, tenacious)
12
eternal(continue, certain, pause, steady)
12
habitual(common, usual, steady, regular)
12
inflexible(strong, tough, flat, firm)
12
loyal(strong, firm, certain, moral)
12
obdurate(strong, tough, flat, firm)
12
repeated(determined, steady, regular, constant)
12
uninterrupted(continue, steady, regular, even)
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APASmart Define. (2015). persistent thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/persistent/thesaurus/synonyms
ChicagoSmart Define. 2015. "persistent thesaurus" https://smartdefine.org/persistent/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, persistent thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/persistent/thesaurus/synonyms>.
MLASmart Define. "persistent thesaurus" 1 June 2015. Web. 20 September 2026. <https://smartdefine.org/persistent/thesaurus/synonyms>