75 entries under firm topic. ×

4
persevering(adjective, tough, determined, unreasonable)
4
persistent(adjective, tough, determined, unreasonable)
3
fixed(adjective, mean, hard, tough)
3
implacable(adjective, mean, hard, tough)
3
rebellious(adjective, tough, unreasonable, grim)
3
steadfast(adjective, tough, determined, usual)
2
cussed(adjective, tough, unreasonable, grim)
2
incompliant(adjective, tough, difficult, awkward)
2
resolved(adjective, deliberate, determined, usual)
2
single-minded(adjective, tough, determined, resolute)
2
stiff(adjective, obstinate, stubborn, unbending)
2
tough(adjective, mean, hard, difficult)
2
uncompliant(adjective, tough, determined, unreasonable)
2
unmanageable(adjective, tough, difficult, awkward)
1
agreed(adjective, determined, usual, regular)
1
appointed(adjective, determined, usual, regular)
1
arranged(adjective, determined, usual, regular)
1
bent(adjective, determined, usual, regular)
1
cantankerous(tough, difficult, awkward, unreasonable)
1
certain(adjective, determined, usual, regular)
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APASmart Define. (2015). pigheaded thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/pigheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "pigheaded thesaurus" https://smartdefine.org/pigheaded/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, pigheaded thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/pigheaded/thesaurus/synonyms>.
MLASmart Define. "pigheaded thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/pigheaded/thesaurus/synonyms>