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obtuse(adjective, hard, unfeeling, unsympathetic, hardened)
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penitent
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prepared(adjective, hard, unfeeling, unsympathetic, hardened)
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recidivist
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recidivistic
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recidivous
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recusant
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resistant(adjective, hard, unfeeling, unsympathetic, hardened)
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seared
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seasoned(adjective, hard, unfeeling, unsympathetic, hardened)
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sinful
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steel the heart(expression, idiom, impenitence)
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steeled(adjective, hard, unfeeling, unsympathetic, hardened)
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unabashed
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unembarrassed
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unemotional(adjective, hard, unfeeling, unsympathetic, hardened)
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unreconstructed
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unrehabilitated
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unselfconscious
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unsubmissive(adjective, hard, unfeeling, unsympathetic, hardened)
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APASmart Define. (2015). impenitent thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impenitent/thesaurus/synonyms
ChicagoSmart Define. 2015. "impenitent thesaurus" https://smartdefine.org/impenitent/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, impenitent thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impenitent/thesaurus/synonyms>.
MLASmart Define. "impenitent thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impenitent/thesaurus/synonyms>