135 entries under adjective topic. ×

1
hardhearted(hard, careless, indifferent, cruel)
1
harsh
1
immune to(expression, dead, insensitive, insusceptible)
1
impenitent(hard, careless, indifferent, cruel)
1
impervious to(expression, dead, insensitive, insusceptible)
1
indurated(hard, careless, indifferent, cruel)
1
insensate(hard, careless, indifferent, cruel)
1
inured(hard, careless, indifferent, cruel)
1
laid-back(detached, impassive, unresponsive, reticent)
1
listless(detached, impassive, unresponsive, laid-back)
1
marble(detached, impassive, unresponsive, insensitive)
1
nonreactive(dead, insensitive, insusceptible)
1
not responsive(expression, detached, impassive, unresponsive)
1
obdurate(hard, careless, indifferent, cruel)
1
phlegmatic(detached, impassive, unresponsive, laid-back)
1
quiet(detached, impassive, unresponsive, laid-back)
1
reserved(detached, impassive, unresponsive, laid-back)
1
reticent(detached, impassive, unresponsive, laid-back)
1
rolling with the punches(expression, idiom, detached, impassive)
1
stiff(hard, careless, indifferent, cruel)
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APASmart Define. (2015). unimpressionable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unimpressionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimpressionable thesaurus" https://smartdefine.org/unimpressionable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unimpressionable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unimpressionable/thesaurus/synonyms>.
MLASmart Define. "unimpressionable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/unimpressionable/thesaurus/synonyms>