113 entries under dull topic. ×

43
indifferent(adjective, calm, hard, cool)
33
stoic(adjective, calm, cool, tough)
31
apathetic(adjective, calm, hard, cool)
28
stolid(adjective, calm, quiet, cool)
22
unemotional(adjective, calm, quiet, hard)
20
phlegmatic(adjective, calm, quiet, cool)
20
unconcerned(adjective, calm, quiet, hard)
18
emotionless(adjective, calm, cool, tough)
17
insensible(adjective, hard, cool, slow)
17
listless(adjective, calm, quiet, cool)
16
insensitive(adjective, hard, temper, careless)
14
uninterested(adjective, weak, easy, slow)
13
poker-faced(adjective, calm, cool, indifferent)
13
unresponsive(adjective, calm, hard, careless)
11
expressionless(adjective, dead, blank, unfeeling)
10
dry(adjective, calm, cool, tough)
10
passionless(adjective, calm, cool, slow)
9
lackadaisical(adjective, calm, cool, weak)
9
lethargic(adjective, calm, weak, easy)
8
matter-of-fact(adjective, calm, cool, simple)
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APASmart Define. (2015). impassive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>