455 entries under adjective topic. ×

32
persevering(quiet, understanding, strong, tough)
30
determined(strong, tough, flat, firm)
29
indefatigable(strong, firm, determined, steady)
29
resolute(strong, tough, flat, firm)
29
relentless(strong, tough, severe, continue)
28
dogged(strong, tough, firm, energetic)
23
continuous(continue, firm, certain, steady)
23
pertinacious(strong, tough, continue, firm)
23
unremitting(strong, continue, firm, determined)
22
tireless(strong, firm, energetic, determined)
20
obstinate(strong, tough, continue, firm)
20
unflagging(strong, firm, certain, determined)
19
insistent(continue, determined, resolute, demanding)
19
unrelenting(tough, firm, certain, determined)
19
unwavering(strong, flat, firm, intense)
18
incessant(strong, continue, firm, determined)
18
staunch(strong, tough, flat, firm)
18
unfaltering(strong, firm, intense, deliberate)
17
fixed(strong, tough, flat, firm)
17
unceasing(strong, continue, firm, determined)
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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>