246 entries under dull topic. ×

3
unenthusiastic(adjective, weak, easy, slow)
2
asleep(adjective, quiet, heavy, lazy)
2
behindhand(adverb, slow, late, lazy)
2
belated(slow, late, behind, delayed)
2
besotted(adjective, simple, slow, stupid)
2
boorish(adjective, slow, stupid)
2
careless(adjective, idle, inactive, lethargic)
2
cold(adjective, calm, flat, dead)
2
cool(adjective, calm, flat, unemotional)
2
debilitated(adjective, uncertain, feeble, weary)
2
delayed(adjective, adverb, low, slow)
2
depressed(adjective, quiet, flat, slow)
2
desensitized(adjective, calm, flat, unemotional)
2
disinterested(adjective, calm, flat, unemotional)
2
drooping(adjective, relaxed, lazy, listless)
2
flagging(weak, slow, heavy, still)
2
impassive(adjective, calm, weak, easy)
2
inattentive(adjective, idle, lazy, inactive)
2
insensitive(adjective, quiet, flat, heavy)
2
lackluster(adjective, weary, stiff, tired)
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APASmart Define. (2016). sluggish thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sluggish/thesaurus/synonyms
ChicagoSmart Define. 2016. "sluggish thesaurus" https://smartdefine.org/sluggish/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, sluggish thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sluggish/thesaurus/synonyms>.
MLASmart Define. "sluggish thesaurus" 1 April 2016. Web. 27 September 2026. <https://smartdefine.org/sluggish/thesaurus/synonyms>