10
slowly(adverb, leisurely, heavily, dully, slowly)
8
lethargically(adverb, dully, slowly, casually, unhurriedly)
7
dully(adverb, seriously, heavily, dully, deeply)
7
languidly(adverb, leisurely, casually, unhurriedly, gradually)
7
listlessly(adverb, casually, unhurriedly, inertly, lethargically)
6
inactively(adverb, casually, unhurriedly, inertly)
6
indolently(adverb, casually, unhurriedly, lethargically)
6
lazily(adverb, leisurely, casually, unhurriedly, gradually)
5
apathetically(adverb, dully, inertly, lethargically)
5
deliberately(adverb, leisurely, casually, unhurriedly, gradually)
5
idly(adverb, inertly)
5
languorously(adverb, inertly, lethargically)
5
lifelessly(adverb, inertly, lethargically)
5
sleepily(adverb, dully, wearily)
5
slothfully(adverb, lethargically)
5
tardily(adverb, casually, unhurriedly)
4
heavily(adverb, laboriously)
4
inanimately(adverb, inertly)
4
inertly(adverb, inertly)
4
phlegmatically(adverb, slowly, lethargically)
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APASmart Define. (2015). sluggishly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sluggishly/thesaurus/synonyms
ChicagoSmart Define. 2015. "sluggishly thesaurus" https://smartdefine.org/sluggishly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sluggishly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sluggishly/thesaurus/synonyms>.
MLASmart Define. "sluggishly thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sluggishly/thesaurus/synonyms>