162 entries under determined topic. ×

14
untiring(adjective, quiet, understanding, gentle)
13
immovable(adjective, stable, fixed, resolute)
13
unflinching(adjective, strong, flat, firm, certain)
13
unswerving(adjective, strong, tough, firm)
12
inflexible(adjective, strong, tough, flat, firm)
12
obdurate(adjective, strong, tough, flat, firm)
12
repeated(adjective, steady, regular, constant)
11
abiding(adjective, strong, tough, continue, flat)
11
persisting(adjective, strong, tough, firm)
11
single-minded(adjective, tough, intense, deliberate)
10
devoted(adjective, strong, firm, steady)
10
set(adjective, strong, tough, flat, firm)
9
assiduous
9
indomitable(adjective, strong, firm, steady)
9
undeviating(adjective, strong, flat, intense, certain)
8
decided(adjective, firm, intense, deliberate)
8
strong-willed(adjective, strong, tough, firm, intense)
7
adamant(adjective, strong, tough, flat, firm)
7
continued(adjective, strong, firm, steady)
7
dedicated(adjective, strong, firm, steady)
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APASmart Define. (2015). persistent thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/persistent/thesaurus/synonyms
ChicagoSmart Define. 2015. "persistent thesaurus" https://smartdefine.org/persistent/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, persistent thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/persistent/thesaurus/synonyms>.
MLASmart Define. "persistent thesaurus" 1 June 2015. Web. 22 September 2026. <https://smartdefine.org/persistent/thesaurus/synonyms>