246 entries under dull topic. ×

1
witless(adjective, simple, slow, stupid)
0
along for the ride(expression, adjective, idiom, calm)
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anesthetic(adjective, slow, unfeeling, unemotional)
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blockheaded(slow, stupid)
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coldhearted(adjective, slow, unfeeling, unemotional)
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conservative(late, behind)
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deadpan(adjective, calm, flat, unemotional)
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deficient(unintelligent, witless, unaccustomed, unpracticed)
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disengaged(lazy, motionless, unmoving, stationary)
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dispassionate(adjective, calm, flat, unemotional)
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downcast(adjective, unhappy, depressed, gray)
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dummy(unintelligent, witless)
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emotionless(adjective, calm, flat, unemotional)
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fatheaded(slow, stupid)
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foolish(silly, stupid, unintelligent, witless)
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futile(unintelligent, witless)
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gullible(unintelligent, witless)
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half-witted(unintelligent, witless)
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having spring fever(expression, adjective, idiom, weary)
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hindered(late, behind)
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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>