164 entries under adjective topic. ×

1
scheduled(firm, determined, usual, regular)
1
settled(firm, determined, usual, regular)
1
solid as a rock(expression, idiom, firm, determined)
1
specified(firm, determined, usual, regular)
1
stated(firm, determined, usual, regular)
1
steely(obstinate, stubborn, unbending)
1
stern(determined, resolute, uncompromising, unshakeable)
1
stipulated(firm, determined, usual, regular)
1
stony
1
stupid(informal, stubborn)
1
tough-nut(hard, tough, difficult, wild)
1
tough nut to crack(expression, idiom, mean, hard)
1
unappeasable(determined, resolute, uncompromising, unshakeable)
1
unfaltering
1
unflappable(set, firm, determined, usual)
1
unforgiving(determined, resolute, uncompromising, unshakeable)
1
unimpressible(mean, hard, harsh, inflexible)
1
unshakable(mean, hard, tough, firm)
1
usual(firm, determined, regular, planned)
1
well-set(firm, 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>