359 entries under adjective topic. ×

10
pertinacious(tough, determined, resolute, obstinate)
10
perverse(mean, hard, tough, deliberate)
10
steely(strong, hard, tough, resolute)
9
refractory(tough, firm, determined, unreasonable)
9
severe(mean, strong, hard, tough)
9
unforgiving(person, mean, hard, rough)
9
unmoved(cold, indifferent, determined, fixed)
8
hardened(person, feelings, determined, resolute)
8
pat(determined, resolute, obstinate, unyielding)
8
persistent(strong, tough, flat, firm)
8
rigorous(strong, hard, tough, harsh)
8
stiff-necked(mean, strong, hard, tough)
8
strict(strong, hard, tough, flat)
7
contrary(determined, fixed, resolute, persistent)
7
decided(determined, resolute, uncompromising, unshakeable)
7
harsh(mean, strong, hard, tough)
7
opinionated(tough, firm, determined, resolute)
7
recalcitrant(tough, firm, unreasonable, grim)
7
remorseless(mean, tough, harsh, resist)
7
resolved(strong, flat, firm, certain)
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APASmart Define. (2016). adamant thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/adamant/thesaurus/synonyms
ChicagoSmart Define. 2016. "adamant thesaurus" https://smartdefine.org/adamant/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, adamant thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/adamant/thesaurus/synonyms>.
MLASmart Define. "adamant thesaurus" 23 March 2016. Web. 27 September 2026. <https://smartdefine.org/adamant/thesaurus/synonyms>