80 entries under sluggish topic. ×

27
impassive(adjective, calm, dull, quiet, cool)
25
dull(noun, adjective, calm, simple, tough)
23
indifferent(adjective, calm, dull, quiet, cool)
17
apathetic(adjective, calm, dull, quiet, cool)
17
obtuse(noun, adjective, dull, simple, slow)
14
phlegmatic(adjective, calm, dull, quiet, cool)
13
slow(adjective, dull, quiet, simple, flat)
12
doltish(verb, adjective, dull, simple, slow)
11
dense(adjective, dull, simple, slow, foolish)
11
thick(adjective, dull, simple, slow, foolish)
9
dumb(adjective, dull, simple, slow, foolish)
9
listless(adjective, calm, dull, quiet, flat)
9
lethargic(adjective, calm, dull, slow, indifferent)
7
dim-witted(adjective, simple, slow, stupid)
7
inert(adjective, dull, quiet, moving, flat)
7
passive(adjective, calm, dull, indifferent, stupid)
6
inactive(adjective, dull, quiet, flat, slow)
6
unintelligent(adjective, dull, simple, slow, foolish)
5
heavy(adjective, dull, quiet, flat, stupid)
5
shallow(adjective, simple, slow, stupid)
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APASmart Define. (2016). stolid thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stolid/thesaurus/synonyms
ChicagoSmart Define. 2016. "stolid thesaurus" https://smartdefine.org/stolid/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, stolid thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stolid/thesaurus/synonyms>.
MLASmart Define. "stolid thesaurus" 3 March 2016. Web. 26 September 2026. <https://smartdefine.org/stolid/thesaurus/synonyms>