74 entries under tough topic. ×

28
stubborn(adjective, characteristic, quality, mean, hard)
20
headstrong(adjective, firm, resist, determined)
19
unyielding(adjective, mean, hard, deliberate)
18
mulish(adjective, mean, hard, difficult)
17
dogged(adjective, mean, hard, resist)
16
intractable(adjective, firm, deliberate, determined)
16
perverse(adjective, mean, hard, firm)
16
willful(adjective, firm, difficult, resist)
15
obdurate(adjective, determined, resolute, obstinate)
14
bullheaded(adjective, firm, difficult, resist)
13
self-willed(adjective, firm, difficult, determined)
12
adamant(adjective, mean, hard, deliberate)
11
pertinacious(adjective, firm, difficult, resist)
11
stiff-necked(adjective, mean, hard, resist)
10
opinionated(adjective, firm, determined, resolute)
9
hardheaded(adjective, firm, resist, determined)
9
refractory(adjective, firm, difficult, determined)
9
tenacious(adjective, firm, difficult, resist)
8
intransigent(adjective, determined, resolute, stubborn)
8
recalcitrant(adjective, firm, difficult, awkward)
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APASmart Define. (2015). pigheaded thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/pigheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "pigheaded thesaurus" https://smartdefine.org/pigheaded/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, pigheaded thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/pigheaded/thesaurus/synonyms>.
MLASmart Define. "pigheaded thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/pigheaded/thesaurus/synonyms>