120 entries under dull topic. ×

1
out of it(expression, adjective, idiom, weary)
1
pining(adjective, weak, easy, slow)
1
plain(adjective, simple, tough, rational)
1
pokey(adjective, slow, heavy, sluggish)
1
sickly(adjective, weak, easy, slow)
1
simple(adjective, slow, stupid, dreary)
1
sleepyhead(adjective, weak, easy, slow)
1
sleepyheaded(adjective, slow, heavy, sluggish)
1
slow-moving(adjective, quiet, moderate, easy)
1
sluggard(adjective, slow, heavy, still)
1
slumberous(adjective, slow, heavy, stupid)
1
snoozy(adjective, weak, easy, slow)
1
stiff(adjective, slow, heavy, sluggish)
1
stretchy(adjective, stupid, idle, weary)
1
stupid(slow, impassive, unresponsive, lethargic)
1
sullen(adjective, slow, heavy, sluggish)
1
wimpy(adjective, weak, easy, slow)
0
blockheaded(slow, stupid)
0
boorish(slow, stupid)
0
bromidic(adjective, simple, uninteresting, ironic)
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APASmart Define. (2015). phlegmatic thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/phlegmatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "phlegmatic thesaurus" https://smartdefine.org/phlegmatic/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, phlegmatic thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/phlegmatic/thesaurus/synonyms>.
MLASmart Define. "phlegmatic thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/phlegmatic/thesaurus/synonyms>