113 entries under dull topic. ×

8
spiritless(adjective, hard, cool, weak)
8
unexcitable(adjective, calm, quiet, cool)
7
inert(adjective, weak, moving, easy)
7
languid(adjective, weak, easy, slow)
7
passive(adjective, calm, indifferent, still)
6
inscrutable(adjective, quiet, cool, moderate)
6
obtuse(adjective, hard, slow, stupid)
6
wooden(adjective, cool, dead, blank)
5
dense(adjective, slow, stupid, unresponsive)
5
inexpressive(adjective, cool, detached, dead)
4
coldhearted(adjective, hard, slow, detached)
4
easygoing(adjective, calm, cool, relaxed)
4
lifeless(adjective, calm, tough, slow)
3
easy(adjective, calm, cool, weak)
3
inactive(adjective, quiet, cool, weak)
3
languorous(adjective, weak, easy, slow)
3
supine(adjective, weak, easy, slow)
2
blah(adjective, calm, weak, easy)
2
bored(adjective, indifferent, weary, apathetic)
2
careless(adjective, calm, hard, cool)
11 years ago|20k views|share |citing 
APASmart Define. (2015). impassive thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>