164 entries under adjective topic. ×

9
tenacious(tough, firm, difficult, resist)
9
uncompromising(mean, hard, firm, deliberate)
8
intransigent(tough, determined, resolute, stubborn)
8
recalcitrant(tough, firm, difficult, awkward)
7
adamantine(tough, determined, resolute, stubborn)
7
contrary(tough, difficult, determined, awkward)
7
determined(tough, firm, deliberate, usual)
7
immovable(mean, hard, determined, usual)
7
rigid(mean, hard, tough, firm)
7
unrelenting(mean, hard, tough, firm)
6
set(firm, usual, sure, planned)
6
unbending(mean, hard, tough, determined)
6
wayward(tough, difficult, awkward, obstinate)
5
bull-headed(obstinate, stubborn, willful)
5
bullet-headed
5
contumacious(tough, firm, determined, unreasonable)
5
doctrinaire(opinionated, dogmatic)
5
dogmatic(determined, fixed, rigid, strict)
5
hard(mean, tough, harsh, determined)
5
resolute(tough, determined, usual, regular)
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APASmart Define. (2015). pigheaded thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/pigheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "pigheaded thesaurus" https://smartdefine.org/pigheaded/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, pigheaded thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/pigheaded/thesaurus/synonyms>.
MLASmart Define. "pigheaded thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/pigheaded/thesaurus/synonyms>