81 entries under firm topic. ×

133
stubborn(adjective, determined, resolute, uncompromising, characteristic)
59
obdurate(adjective, strong, hard, tough, severe)
51
unyielding(adjective, mean, strong, hard, tough)
50
inflexible(adjective, mean, strong, hard, tough)
41
uncompromising(adjective, mean, hard, tough, severe)
39
resolute(adjective, strong, hard, tough, rough)
35
dogged(adjective, mean, strong, hard, tough)
34
determined(adjective, strong, tough, intense)
34
rigid(adjective, mean, hard, tough, moderate)
31
adamant(adjective, mean, strong, hard, tough)
31
mulish(adjective, mean, strong, hard, tough)
31
tenacious(adjective, strong, intense, resist)
29
intransigent(adjective, determined, resolute, stubborn)
28
unbending(adjective, mean, hard, tough, severe)
25
intractable(adjective, control, order, strong, hard)
24
stiff(adjective, hard, tough, rough)
23
fixed(adjective, mean, hard, rough)
23
inexorable(adjective, mean, hard, tough)
23
pertinacious(adjective, mean, strong, tough, continue)
23
relentless(adjective, mean, strong, hard, tough)
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APASmart Define. (2015). obstinate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/obstinate/thesaurus/synonyms
ChicagoSmart Define. 2015. "obstinate thesaurus" https://smartdefine.org/obstinate/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, obstinate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/obstinate/thesaurus/synonyms>.
MLASmart Define. "obstinate thesaurus" 3 August 2015. Web. 26 September 2026. <https://smartdefine.org/obstinate/thesaurus/synonyms>