1
cold-blooded(adjective, cool, tough, rational, straightforward)
1
coldhearted(adjective, detached, impassive, unresponsive, laid-back)
1
compliant(adjective, quiet, indifferent, apathetic, lifeless)
1
cool-headed
1
creeping(adjective, slow)
1
cycloid
1
cyclothyme
1
cyclothymic
1
deaden
1
deaf(adjective, indifferent, unsympathetic, inattentive, uninterested)
1
delaying(adjective, slow)
1
deliberate(adjective, calm, quiet, moderate, easy)
1
diffident(adjective, indifferent, detached, distant, apathetic)
1
docile(adjective, quiet, indifferent, apathetic, lifeless)
1
doltish(adjective, dull, slow, stupid, impassive)
1
down(adjective, dull, slow, heavy, still)
1
down-to-earth(adjective, tough, rational, straightforward, sober)
1
draggy(adjective, dull, simple, slow, heavy)
1
dreamy(still, lethargic, languid, sleepy, indolent)
1
drippy(adjective, dull, slow, heavy, sluggish)
<1…678910>
11 years ago|17k views|share |citing 
APASmart Define. (2015). phlegmatic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/phlegmatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "phlegmatic thesaurus" https://smartdefine.org/phlegmatic/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, phlegmatic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/phlegmatic/thesaurus/synonyms>.
MLASmart Define. "phlegmatic thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/phlegmatic/thesaurus/synonyms>