891 entries under adjective topic. ×

6
unhesitating(complete, certain, resolution, serious)
6
unmoved(calm, cold, indifferent, determined)
6
untiring(determined, persevering)
5
absolute(clear, strong, complete, easy)
5
authoritative
5
balanced(calm, strong, secure, easy)
5
categorical(clear, complete, severe, total)
5
committed(strong, determined, steady, fixed)
5
consolidated(close, set, hard, solid)
5
contumacious(tough, persistent, obstinate, stubborn)
5
courageous(strong, determined, vigorous, noble)
5
dauntless(strong, vigorous, noble, bold)
5
die-hard(moderate, honest, determined, resolute)
5
going(certain, definite, resolved, unalterable)
5
hardened(set, strong, hard, tough)
5
impermeable(close, hard, solid, fast)
5
incompliant(tough, solid, determined, stiff)
5
ironclad(set, hard, usual, regular)
5
never-failing(complete, total, solid, certain)
5
palpable(plain, physical, material, substantial)
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APASmart Define. (2016). firm thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/firm/thesaurus/synonyms
ChicagoSmart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, firm thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>.
MLASmart Define. "firm thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms>