612 entries under adjective topic. ×

7
loyal(good, strong, firm, honest)
7
pigheaded(tough, firm, deliberate, usual)
7
serious(set, strong, severe, firm)
7
severe(persistent, rigid, obstinate, insistent)
7
stony
7
strict(strong, flat, harsh, certain)
7
unchanging
7
unhesitating
7
vigorous(strong, keen, solid, energetic)
6
assertive
6
bound(set, strong, tough, severe)
6
considered(verb, deliberate, planned, expected)
6
diligent(resolute, tenacious)
6
distinct(firm, energetic, definite, absolute)
6
emphatic(complete, warm, total, passionate)
6
faithful(good, strong, firm, honest)
6
gritty(energetic, steady, resolution, resolute)
6
recalcitrant(tough, firm, persistent, obstinate)
6
stiff-necked(firm, deliberate, usual, regular)
6
undaunted
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APASmart Define. (2016). determined thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/determined/thesaurus/synonyms
ChicagoSmart Define. 2016. "determined thesaurus" https://smartdefine.org/determined/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, determined thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/determined/thesaurus/synonyms>.
MLASmart Define. "determined thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/determined/thesaurus/synonyms>