160 entries under adjective topic. ×

11
lifeless(dull, quiet, flat, low)
11
phlegmatic(dull, quiet, easy, slow)
10
faineant(action, dull, slow, careless)
9
passive(dull, quiet, careless, indifferent)
9
remiss(dull, careless, thoughtless, sluggish)
8
dilatory(dull, quiet, slow, careless)
8
laggard(noun, dull, quiet, easy)
7
indifferent(dull, flat, low, sad)
7
lax(dull, slow, careless, indifferent)
7
leaden(dull, quiet, easy, slow)
6
do-nothing(action, dull, informal, idle)
6
leisurely
6
tardy(dull, quiet, easy, slow)
6
tired(dull, careless, indifferent, idle)
6
unhurried
5
dopey(dull, flat, low, sad)
5
lumpish(dull, slow, heavy, sluggish)
5
spiritless(dull, sad, careless, indifferent)
4
heavy(dull, quiet, easy, slow)
4
inattentive(dull, careless, indifferent, idle)
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APASmart Define. (2015). slothful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/slothful/thesaurus/synonyms
ChicagoSmart Define. 2015. "slothful thesaurus" https://smartdefine.org/slothful/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, slothful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/slothful/thesaurus/synonyms>.
MLASmart Define. "slothful thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/slothful/thesaurus/synonyms>