151 entries under adjective topic. ×

5
intransigent(tough, severe, determined, resolute)
5
persevering(tough, firm, determined, unreasonable)
5
refractory(tough, firm, difficult, determined)
5
stern(determined, serious, resolute, uncompromising)
5
strong-willed(resolute, tenacious)
5
tough(strong, hard, firm, difficult)
5
unrelenting(strong, hard, tough, firm)
4
bold(resolute, tenacious)
4
bullet-headed
4
deaf(indifferent, unresponsive, oblivious, unwilling)
4
doctrinaire(opinionated, dogmatic)
4
hard-nosed(strong, hard, tough, determined)
4
implacable(strong, hard, tough, firm)
4
inexorable(strong, hard, tough, determined)
4
inflexible(strong, hard, tough, firm)
4
relentless(strong, hard, tough, determined)
4
resolute(resolute, tenacious)
4
set
4
unbending(strong, hard, tough, firm)
4
uncompromising(tough, firm, determined, resolute)
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APASmart Define. (2015). bullheaded thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/bullheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "bullheaded thesaurus" https://smartdefine.org/bullheaded/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, bullheaded thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/bullheaded/thesaurus/synonyms>.
MLASmart Define. "bullheaded thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/bullheaded/thesaurus/synonyms>