128 entries under unresponsive topic. ×

3
tough(noun, adjective, set, strong, hard)
3
unconcerned(adjective, calm, indifferent, restrained, detached)
2
aloof(adjective, calm, indifferent, restrained, detached)
2
hardhearted(adjective, unfeeling, insensible, oblivious)
2
imperturbable(adjective, calm, restrained, subdued, impassive)
2
obtuse(noun, adjective, oblivious, unmoved)
2
unemotional(adjective, indifferent, detached, distant, apathetic)
2
unkind(adjective, bad, cold, aloof)
1
blase(indifferent, detached, distant, apathetic, unfeeling)
1
calm(adjective, restrained, detached, unconcerned, subdued)
1
casual(adjective, calm, restrained, unconcerned, subdued)
1
cold fish(expression, adjective, calm, restrained, subdued)
1
detached(adjective, indifferent, distant, apathetic, unfeeling)
1
diffident(adjective, indifferent, detached, distant, apathetic)
1
disinterested(adjective, indifferent, detached, distant, apathetic)
1
dispassionate(adjective, calm, indifferent, restrained, detached)
1
distant(adjective, indifferent, detached, apathetic, unfeeling)
1
easy-going(adjective, calm, restrained, unconcerned, subdued)
1
equitable(adjective, indifferent, detached, distant, apathetic)
1
haughty(adjective, indifferent, detached, distant, apathetic)
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APASmart Define. (2015). impervious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impervious/thesaurus/synonyms
ChicagoSmart Define. 2015. "impervious thesaurus" https://smartdefine.org/impervious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, impervious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impervious/thesaurus/synonyms>.
MLASmart Define. "impervious thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impervious/thesaurus/synonyms>