76 entries under cool topic. ×

2
dead(adjective, still, unfriendly, aloof)
2
heartless(adjective, indifferent, detached, blank)
2
long-suffering(adjective, calm, quiet, indifferent)
2
reserved(adjective, indifferent, restrained, detached)
2
taciturn(adjective, unfriendly, blank, aloof)
2
unexcited(adjective, calm, quiet, relaxed)
2
wooden(adjective, dull, blank, aloof)
1
cold-blooded(adjective, tough, rational, straightforward)
1
enduring(adjective, calm, quiet, indifferent)
1
glacial(adjective, detached, aloof, distant)
1
hardened(adjective, indifferent, blank, aloof)
1
impersonal(adjective, tough, rational, straightforward)
1
indurated(adjective, blank, aloof, unemotional)
1
inexcitable(adjective, blank, aloof, unemotional)
1
inexpressive(adjective, detached, blank, aloof)
1
insusceptible(adjective, blank, aloof, unemotional)
1
patient(adjective, calm, quiet, indifferent)
1
poker-faced(adjective, quiet, indifferent, detached)
1
reticent(adjective, restrained, detached, unfriendly)
1
sedate(adjective, calm, smooth, still)
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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>