Synonyms|319Antonyms|166|Broader|2Narrower|0Related|1.1k
1
sharp-witted
1
single-minded(tough, firm, determined, unreasonable, grim)
1
smart
1
sober-minded
1
sophisticated
1
sot
1
sound-thinking
1
standing pat(adjective, determined, resolute, obstinate, uncompromising)
1
staunch
1
steely(adjective, strong, hard, tough, severe)
1
strict(adjective, strong, hard, tough, severe)
1
strong-willed
1
strongheaded
1
sulky
1
sullen
1
thoughtful
1
tough nut
1
unappeasable(adjective, determined, resolute, uncompromising, unshakeable)
1
uncooperative
1
uncullible
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APASmart Define. (2015). hardheaded thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/hardheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "hardheaded thesaurus" https://smartdefine.org/hardheaded/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, hardheaded thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/hardheaded/thesaurus/synonyms>.
MLASmart Define. "hardheaded thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/hardheaded/thesaurus/synonyms>