460 entries under adjective topic. ×

5
implacable(mean, hard, cruel, determined)
5
indefatigable
5
opposed(negative, hostile, different, adverse)
5
peremptory(resolution, authoritative, overbearing)
5
standing pat(determined, resolute, uncompromising, unshakeable)
5
steely(set, hard, stiff, rigid)
5
tireless
5
unalterable(hard, determined, fixed, inflexible)
5
undisciplined(control, order, tough, difficult)
5
unrepentant
4
assertive
4
brave(resolution, tenacious)
4
bulldogged
4
conflicting(negative, hostile, different, adverse)
4
cross(mean, difficult, irritable, ugly)
4
devoted(passionate, violent, determined, resolute)
4
enduring(determined, resolute, persistent, hardened)
4
faithful
4
fanatical(unreasonable, fervent, rigid, inflexible)
4
forceful
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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>