13
inflexible(adjective, resist, determined, resolute, obstinate)
13
stubborn(adjective, characteristic, quality, tough, resist)
13
unyielding(adjective, resist, determined, resolute, obstinate)
12
obdurate(adjective, resist, determined, resolute, obstinate)
12
rigid(adjective, resist, determined, resolute, obstinate)
12
unbending(adjective, resist, determined, resolute, obstinate)
12
uncompromising(adjective, resist, determined, unreasonable, resolute)
11
inexorable(adjective, resist, determined, resolute, obstinate)
10
intransigent(adjective, resist, determined, resolute, obstinate)
9
unrelenting(adjective, resist, determined, resolute, obstinate)
8
adamantine(adjective, tough, firm, resist, determined)
8
incompliant(adjective, resist, determined, resolute, persistent)
7
implacable(adjective, tough, firm, resist, determined)
7
intractable(adjective, tough, firm, unreasonable, irritable)
7
iron(adjective, tough, resist, unreasonable, grim)
7
relentless(adjective, tough, firm, resist, determined)
6
adamant(adjective, tough, firm, resist, determined)
6
brassbound(adjective, resist, determined, resolute, persistent)
6
die-hard(adjective, resist, determined, resolute, persistent)
6
grim(adjective, resist, determined, resolute, persistent)
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APASmart Define. (2015). uncompliant thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/uncompliant/thesaurus/synonyms
ChicagoSmart Define. 2015. "uncompliant thesaurus" https://smartdefine.org/uncompliant/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, uncompliant thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/uncompliant/thesaurus/synonyms>.
MLASmart Define. "uncompliant thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/uncompliant/thesaurus/synonyms>