Synonyms|187Antonyms|2|Broader|2Narrower|0Related|38
1
sulky
1
sullen
1
tough
1
unabated(adjective, persistent, constant, pitiless, unyielding)
1
unbending(adjective, persistent, constant, pitiless, unyielding)
1
unbroken(adjective, persistent, constant, pitiless, unyielding)
1
uncooperative
1
uncullible
1
undeceivable
1
undeludable
1
undupable
1
unemotional
1
unfoolable
1
ungullible
1
unhoaxable
1
unideal
1
unidealistic
1
unregenerate
1
unremitting(adjective, persistent, constant, pitiless, unyielding)
1
unseduceable
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APASmart Define. (2015). hard-headed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard-headed/thesaurus/synonyms
ChicagoSmart Define. 2015. "hard-headed thesaurus" https://smartdefine.org/hard-headed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, hard-headed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard-headed/thesaurus/synonyms>.
MLASmart Define. "hard-headed thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/hard-headed/thesaurus/synonyms>