460 entries under adjective topic. ×

10
hidebound(moderate, severe, determined, resolute)
10
indomitable(violent, determined, resolution, resolute)
9
difficult(hard, tough, stubborn, complicated)
9
pat(determined, usual, regular, serious)
9
pig-headed(determined, resolute, impulsive, stubborn)
9
staunch(strong, tough, firm, intense)
9
stony
9
unflinching(strong, firm, determined, resolution)
9
ungovernable(control, order, resist, violent)
8
bull-headed(determined, resolute, stubborn, uncompromising)
8
constant(moderate, firm, determined, serious)
8
dour(severe, difficult, sullen, crabby)
8
inelastic(determined, resolute, uncompromising, unshakeable)
8
set in stone(expression, idiom, mean, hard)
8
severe(severe, rigid)
8
steady(moderate, determined, resolution, resolute)
8
stern(hard, tough, severe, rough)
8
strong(rigid, tenacious)
8
strong-minded(determined, resolution, fixed, serious)
8
sturdy
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APASmart Define. (2015). obstinate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/obstinate/thesaurus/synonyms
ChicagoSmart Define. 2015. "obstinate thesaurus" https://smartdefine.org/obstinate/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, obstinate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/obstinate/thesaurus/synonyms>.
MLASmart Define. "obstinate thesaurus" 3 August 2015. Web. 27 September 2026. <https://smartdefine.org/obstinate/thesaurus/synonyms>