170 entries under sluggish topic. ×

41
slow(verb, adjective, stop, upset, trouble)
38
obtuse(noun, adjective, simple, sharp, slow)
35
stupid(adjective, simple, flat, rough, slow)
29
lifeless(adjective, calm, weak, simple, tough)
29
wearisome(adjective, boring, tedious, dreary, lifeless)
23
dumb(verb, adjective, calm, quiet, simple)
23
dense(adjective, simple, slow, dark, gloomy)
23
heavy(adjective, upset, quiet, severe, warm)
23
numb(noun, verb, adjective, quiet, develop)
23
stolid(noun, adjective, calm, simple, tough)
23
torpid(adjective, quiet, flat, low, sad)
22
inactive(adjective, action, quiet, low, slow)
22
thick(adjective, simple, obscure, warm, slow)
21
doltish(adjective, simple, slow, careless, foolish)
21
leaden(adjective, quiet, severe, flat, slow)
19
apathetic(adjective, calm, quiet, tough, flat)
19
inert(adjective, upset, quiet, moving, flat)
19
listless(adjective, calm, quiet, bad, weak)
18
languid(adjective, quiet, weak, flat, weakness)
17
dim-witted(adjective, simple, slow, foolish, stupid)
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APASmart Define. (2016). dull thesaurus. Retrieved April 23, 2019, from https://smartdefine.org/dull/thesaurus/synonyms
ChicagoSmart Define. 2016. "dull thesaurus" https://smartdefine.org/dull/thesaurus/synonyms (accessed April 23, 2019).
HarvardSmart Define 2016, dull thesaurus, Smart Define, viewed 23 April, 2019, <https://smartdefine.org/dull/thesaurus/synonyms>.
MLASmart Define. "dull thesaurus" 29 March 2016. Web. 23 April 2019. <https://smartdefine.org/dull/thesaurus/synonyms>