95 entries under unresponsive topic. ×

1
doltish(adjective, dull, slow, stupid, impassive)
1
equitable(adjective, indifferent, detached, distant, apathetic)
1
glacial(adjective, cool, detached, aloof, distant)
1
going with the flow(expression, adjective, idiom, detached, impassive)
1
hard-boiled(adjective, tough, rational, straightforward, detached)
1
hard-hearted(adjective, indifferent, detached, unsympathetic, impassive)
1
haughty(adjective, indifferent, detached, distant, apathetic)
1
highbrow(adjective, indifferent, detached, distant, apathetic)
1
impartial(adjective, indifferent, detached, distant, apathetic)
1
impervious(adjective, indifferent, detached, distant, apathetic)
1
inattentive(adjective, dull, indifferent, detached, distant)
1
inexpressive(adjective, cool, detached, blank, aloof)
1
marble(adjective, detached, impassive, laid-back)
1
neutral(adjective, dull, indifferent, detached, distant)
1
nonpartisan(adjective, indifferent, detached, distant, apathetic)
1
not responsive(expression, adjective, detached, impassive)
1
obdurate(adjective, detached, impassive, laid-back)
1
objective(adjective, tough, indifferent, rational, straightforward)
1
poker-faced(adjective, quiet, cool, indifferent, detached)
1
reticent(adjective, cool, restrained, detached, unfriendly)
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APASmart Define. (2015). phlegmatic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/phlegmatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "phlegmatic thesaurus" https://smartdefine.org/phlegmatic/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, phlegmatic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/phlegmatic/thesaurus/synonyms>.
MLASmart Define. "phlegmatic thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/phlegmatic/thesaurus/synonyms>