0
immobile
0
impenetrable(adjective, hard, unfeeling, unsympathetic, hardened)
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imperceptive(adjective, hard, impassive, insensitive, unsusceptible)
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imperturbable
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impious(adjective, hard, unfeeling, unsympathetic, hardened)
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inaccessible(adjective, hard, unfeeling, unsympathetic, hardened)
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inclement
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incurious(hard, insensitive, unsusceptible)
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inexpressive(adjective, detached, impassive, unresponsive, dispassionate)
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inhuman
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insouciant
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irreverent(adjective, hard, unfeeling, unsympathetic, hardened)
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lackadaisical
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laid back(expression, insensitive, obdurate)
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nonchalant
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pitiless(adjective, unfeeling, unsympathetic, uncaring, insensitive)
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poker-faced(adjective, detached, impassive, unresponsive, dispassionate)
0
prepared(adjective, hard, unfeeling, unsympathetic, hardened)
0
remote
0
resistant(adjective, hard, unfeeling, unsympathetic, hardened)
11 years ago|2.3k views|share |citing 
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>