49 entries under impassive topic. ×

1
composed(adjective, detached, unresponsive, dispassionate)
1
deadpan(adjective, detached, unresponsive, laid-back)
1
detached(adjective, unresponsive, dispassionate, undemonstrative)
1
emotionless(adjective, detached, unresponsive, laid-back)
1
flat(adjective, detached, unresponsive, laid-back)
1
glacial(adjective, detached, unresponsive, insensitive)
1
going with the flow(expression, adjective, idiom, detached)
1
hard-boiled(adjective, hard, careless, indifferent, cruel)
1
hard-hearted(adjective, detached, unresponsive, insensitive)
1
laid-back(adjective, detached, unresponsive, reticent)
1
listless(adjective, detached, unresponsive, laid-back)
1
marble(adjective, detached, unresponsive, insensitive)
1
not responsive(expression, adjective, detached, unresponsive)
1
obdurate(adjective, hard, careless, indifferent, cruel)
1
phlegmatic(adjective, detached, unresponsive, laid-back)
1
quiet(adjective, detached, unresponsive, laid-back)
1
reserved(adjective, detached, unresponsive, laid-back)
1
reticent(adjective, detached, unresponsive, laid-back)
1
rolling with the punches(expression, adjective, idiom, detached)
1
stoic(adjective, laid-back, dispassionate, emotionless)
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APASmart Define. (2015). unimpressionable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unimpressionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimpressionable thesaurus" https://smartdefine.org/unimpressionable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unimpressionable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unimpressionable/thesaurus/synonyms>.
MLASmart Define. "unimpressionable thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/unimpressionable/thesaurus/synonyms>