74 entries under hard topic. ×

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impenetrable(adjective, unfeeling, unsympathetic, hardened)
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imperceptive(adjective, impassive, insensitive, unsusceptible)
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impious(adjective, unfeeling, unsympathetic, hardened)
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inaccessible(adjective, unfeeling, unsympathetic, hardened)
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incurious(insensitive, unsusceptible)
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irreverent(adjective, unfeeling, unsympathetic, hardened)
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prepared(adjective, unfeeling, unsympathetic, hardened)
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resistant(adjective, unfeeling, unsympathetic, hardened)
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seasoned(adjective, unfeeling, unsympathetic, hardened)
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steeled(adjective, unfeeling, unsympathetic, hardened)
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tactless(insensitive, unsusceptible)
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unashamed(adjective, unfeeling, unsympathetic, hardened)
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unrepenting(adjective, unfeeling, unsympathetic, hardened)
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unsubmissive(adjective, unfeeling, unsympathetic, hardened)
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APASmart Define. (2015). unimpressionable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unimpressionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimpressionable thesaurus" https://smartdefine.org/unimpressionable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unimpressionable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unimpressionable/thesaurus/synonyms>.
MLASmart Define. "unimpressionable thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/unimpressionable/thesaurus/synonyms>