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rolling with punches(expression, idiom, laid-back, reticent, emotionless)
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seasoned(adjective, hard, unfeeling, unsympathetic, hardened)
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serene
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steeled(adjective, hard, unfeeling, unsympathetic, hardened)
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stoical
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taciturn
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tactless(hard, insensitive, unsusceptible)
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unashamed(adjective, hard, unfeeling, unsympathetic, hardened)
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undisturbed
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unmoral
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unmoved
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unrepenting(adjective, hard, unfeeling, unsympathetic, hardened)
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unruffled
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unsubmissive(adjective, hard, unfeeling, unsympathetic, hardened)
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APASmart Define. (2015). unimpressionable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unimpressionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimpressionable thesaurus" https://smartdefine.org/unimpressionable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unimpressionable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unimpressionable/thesaurus/synonyms>.
MLASmart Define. "unimpressionable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/unimpressionable/thesaurus/synonyms>