94 entries under sluggish topic. ×

31
ponderous(adjective, dull, quiet, easy, severe)
24
dull(adjective, upset, characteristic, quiet, severe)
17
leaden(adjective, dull, quiet, weak, easy)
13
listless(adjective, characteristic, dull, quiet, weak)
13
torpid(adjective, dull, quiet, weak, easy)
12
lifeless(adjective, dull, quiet, flat, slow)
12
slow(adjective, characteristic, dull, quiet, weak)
10
lethargic(adjective, dull, quiet, weak, easy)
9
inert(adjective, upset, dull, quiet, weak)
9
languid(adjective, dull, weak, easy, slow)
9
sullen(adjective, upset, dull, sad, slow)
8
apathetic(adjective, dull, quiet, weak, easy)
8
drowsy(adjective, dull, quiet, easy, slow)
7
inactive(adjective, dull, quiet, weak, easy)
7
lumpish(adjective, dull, easy, slow, heavy)
7
sleepy(adjective, dull, quiet, easy, slow)
6
comatose(adjective, dull, quiet, weak, easy)
6
phlegmatic(adjective, dull, quiet, weak, easy)
6
slack(adjective, dull, quiet, moderate, easy)
6
stiff(adjective, set, hard, tough, severe)
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APASmart Define. (2016). heavy thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, heavy thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>.
MLASmart Define. "heavy thesaurus" 25 January 2016. Web. 23 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms>