95 entries under unresponsive topic. ×

9
unmoved(adjective, calm, cool, indifferent, detached)
7
detached(adjective, calm, quiet, cool, relaxed)
7
disinterested(adjective, calm, indifferent, detached, distant)
7
stoical(adjective, calm, cool, smooth, indifferent)
7
unfeeling(adjective, calm, cool, tough, indifferent)
6
flat(adjective, calm, quiet, tough, indifferent)
6
frigid(adjective, calm, restrained, detached, impassive)
6
heavy(adjective, dull, quiet, weak, easy)
6
lumpish(adjective, dull, slow, heavy, sluggish)
6
supine(adjective, dull, quiet, weak, easy)
6
uninvolved(adjective, calm, quiet, indifferent, detached)
5
aloof(adjective, calm, cool, indifferent, restrained)
5
blah(adjective, calm, dull, weak, easy)
5
emotionless(adjective, calm, dull, cool, tough)
4
dense(adjective, dull, slow, stupid, impassive)
4
distant(adjective, cool, indifferent, restrained, detached)
4
dry(adjective, calm, dull, cool, tough)
4
insensitive(adjective, dull, indifferent, detached, unfeeling)
4
quiet(adjective, calm, easy, relaxed, heavy)
4
undemonstrative(adjective, calm, cool, restrained, detached)
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APASmart Define. (2015). phlegmatic thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/phlegmatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "phlegmatic thesaurus" https://smartdefine.org/phlegmatic/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, phlegmatic thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/phlegmatic/thesaurus/synonyms>.
MLASmart Define. "phlegmatic thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/phlegmatic/thesaurus/synonyms>