96 entries under obstinate topic. ×

7
indomitable(adjective, characteristic, strong, hard, tough)
7
uncompliant(adjective, tough, resist, unreasonable, grim)
6
incompliant(adjective, resist, determined, resolute, persistent)
6
steely(adjective, dull, strong, hard, tough)
6
tenacious(adjective, strong, tough, firm, solid)
5
brassbound(adjective, resist, determined, resolute, persistent)
5
die-hard(adjective, resist, determined, resolute, persistent)
5
immovable(adjective, mean, strong, hard, tough)
5
remorseless(adjective, resist, determined, resolute, persistent)
5
steadfast(adjective, strong, tough, firm, determined)
5
unbendable(adjective, resist, determined, resolute, persistent)
4
hidebound(adjective, persistent, stubborn, unbending)
4
resolved(adjective, determined, resolution, resolute, persistent)
4
set(verb, adjective, strong, tough, firm)
4
severe(adjective, persistent, insistent, dogged)
4
stiff(adjective, firm, resolute, rigid, inflexible)
3
fast(adjective, strong, tough, firm, solid)
3
intractable(adjective, tough, firm, unreasonable, grim)
3
persistent(adjective, insistent, dogged)
3
refractory(adjective, persistent, insistent, dogged)
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APASmart Define. (2015). iron thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/iron/thesaurus/synonyms
ChicagoSmart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, iron thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>.
MLASmart Define. "iron thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms>