74 entries under tough topic. ×

1
iron(adjective, mean, hard, firm)
1
mule(firm, unreasonable, grim, impulsive)
1
ornery(firm, unreasonable, grim, inflexible)
1
tough-nut(adjective, hard, difficult, wild)
1
unreasonable(firm, grim, inflexible, obstinate)
1
unshakable(adjective, mean, hard, firm)
1
untoward(firm, unreasonable, grim, inflexible)
0
awkward(difficult, obstinate, stubborn, willful)
0
incurable(difficult, awkward, obstinate, stubborn)
0
indocile(difficult, awkward, obstinate, stubborn)
0
insoluble(difficult, awkward, obstinate, stubborn)
0
levelheaded(adjective, hard, shrewd, stubborn)
0
shrewd(adjective, hard, sharp, practical)
0
undisciplined(difficult, awkward, obstinate, stubborn)
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APASmart Define. (2015). pigheaded thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/pigheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "pigheaded thesaurus" https://smartdefine.org/pigheaded/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, pigheaded thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/pigheaded/thesaurus/synonyms>.
MLASmart Define. "pigheaded thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/pigheaded/thesaurus/synonyms>