116 entries under adjective topic. ×

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cynical(hard, unfeeling, unsympathetic, hardened)
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deaf to(expression, hard, unfeeling, unsympathetic)
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dense(strong, hard, solid, stiff)
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fibrous(strong, hard, solid, stiff)
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fit(strong, hard, solid, stiff)
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fortified
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frozen
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hard-edged(toughened, cynical, hard-boiled, hard-bitten)
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hardboiled(seasoned, coldhearted, unsubmissive, hard-as-nails)
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hardnosed
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impenitent(hard, unfeeling, unsympathetic, hardened)
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incorrigible
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indifferent(hard, unfeeling, unsympathetic, hardened)
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indigestible(strong, hard, solid, stiff)
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inexorable
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inflexible(strong, hard, solid, stiff)
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inhuman
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insensible(hard, unfeeling, unsympathetic, hardened)
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insentient(hard, unfeeling, unsympathetic, hardened)
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leathery(strong, hard, solid, stiff)
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APASmart Define. (2015). steeled thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/steeled/thesaurus/synonyms
ChicagoSmart Define. 2015. "steeled thesaurus" https://smartdefine.org/steeled/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, steeled thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/steeled/thesaurus/synonyms>.
MLASmart Define. "steeled thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/steeled/thesaurus/synonyms>