45 entries under unresponsive topic. ×

1
undemonstrative(adjective, calm, dull, cool, flat)
1
unexcitable(adjective, calm, dull, flat, detached)
1
unfeeling(adjective, calm, dull, cool, tough)
1
unimpressionable(adjective, detached, impassive, laid-back)
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unsympathetic(adjective, detached, impassive, laid-back)
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APASmart Define. (2015). deadpan thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/deadpan/thesaurus/synonyms
ChicagoSmart Define. 2015. "deadpan thesaurus" https://smartdefine.org/deadpan/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, deadpan thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/deadpan/thesaurus/synonyms>.
MLASmart Define. "deadpan thesaurus" 2 September 2015. Web. 25 September 2026. <https://smartdefine.org/deadpan/thesaurus/synonyms>