173 entries under dull topic. ×

5
defunct(adjective, cold, tired, lifeless)
5
dilatory(adjective, quiet, moderate, easy)
5
insensible(adjective, quiet, flat, listless)
5
low(adjective, moderate, stiff, late)
5
stolid(adjective, quiet, flat, slow)
5
tame(late, insensibility, behind, physical inertness)
5
unconcerned(adjective, quiet, cool, weak)
5
unhurried(adjective, weak, easy, slow)
5
unresponsive(adjective, quiet, flat, slow)
4
limp(adjective, action, weak, easy)
4
shiftless(adjective, idle, sluggish, lazy)
4
uninterested(adjective, weak, easy, slow)
3
blah(adjective, action, quiet, weak)
3
blunt(adjective, heavy, stupid, impassive)
3
cold(adjective, dead, lifeless, late)
3
dopey(adjective, quiet, weak, easy)
3
down(adjective, action, low, slow)
3
drowsy(adjective, quiet, easy, slow)
3
gradual(late, slowness, behind)
3
impassive(adjective, quiet, cool, weak)
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APASmart Define. (2015). inactive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inactive/thesaurus/synonyms
ChicagoSmart Define. 2015. "inactive thesaurus" https://smartdefine.org/inactive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, inactive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inactive/thesaurus/synonyms>.
MLASmart Define. "inactive thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/inactive/thesaurus/synonyms>