260 entries under adjective topic. ×

1
bound(verb, strong, tough, firm)
1
bullhead(mean, hard, tough, harsh)
1
burly
1
buttoned down(expression, strong, solid, stable)
1
callous(set, mean, strong, hard)
1
cantankerous(persistent, obstinate, insistent, dogged)
1
chopping
1
cinereal(dull, lead, grim, leaden)
1
clouded(dull, lead, grim, leaden)
1
cold fish(expression, mean, hard, unfeeling)
1
confirmed(persistent, obstinate, insistent, dogged)
1
contrary(persistent, obstinate, insistent, dogged)
1
contumacious(persistent, obstinate, insistent, dogged)
1
cordial
1
cussed(persistent, obstinate, insistent, dogged)
1
dead set(determined, resolute, uncompromising, unshakeable)
1
decided
1
defiant(persistent, obstinate, insistent, dogged)
1
demanding(persistent, obstinate, insistent, dogged)
1
disobedient(persistent, obstinate, insistent, dogged)
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APASmart Define. (2015). iron thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/iron/thesaurus/synonyms
ChicagoSmart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, iron thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>.
MLASmart Define. "iron thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms>