164 entries under adjective topic. ×

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positioned(inflexible, unbending)
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priggish(strong, cold, standoffish, formal)
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prim(strong, cold, standoffish, formal)
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punctilious(strong, cold, standoffish, formal)
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robust(strong, hard, tough, sturdy)
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rugged(strong, hard, tough, sturdy)
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set in your ways(expression, idiom, inflexible, unbending)
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sited(inflexible, unbending)
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situate(inflexible, unbending)
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situated(inflexible, unbending)
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stable(inflexible, unbending)
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standoffish(strong, cold, formal, stuffy)
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steel(strong, hard, tough, sturdy)
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stilted(strong, cold, standoffish, formal)
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stringent
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strong(hard, tough, cold, sturdy)
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stuffy(standoffish, formal)
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sturdy(strong, hard, tough, rugged)
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thick(strong, hard, tough, sturdy)
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uncompliant
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APASmart Define. (2015). hardheaded thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hardheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "hardheaded thesaurus" https://smartdefine.org/hardheaded/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, hardheaded thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hardheaded/thesaurus/synonyms>.
MLASmart Define. "hardheaded thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/hardheaded/thesaurus/synonyms>