4
stoic(adjective, calm, unemotional, composed)
4
unmoving(adjective, quiet, still, lifeless, motionless)
4
unresponsive(adjective, calm, dull, quiet, flat)
4
work-shy(adjective, idle, lazy, indolent, faineant)
3
aloof
3
behind(adverb, dull, slow, late, debt)
3
catatonic(adjective, inert)
3
doltish(adjective, dull, simple, slow, stupid)
3
exanimate
3
frigid(adjective, calm, dull, flat, unemotional)
3
glacial(adjective, slowness)
3
irksome
3
laid-back(adjective, dull, weak, easy, slow)
3
moribund
3
muted
3
numb
3
numbed
3
oscitant
3
otiose(adjective, inactivity)
3
pooped
10 years ago|31k views|share |citing 
APASmart Define. (2016). sluggish thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sluggish/thesaurus/synonyms
ChicagoSmart Define. 2016. "sluggish thesaurus" https://smartdefine.org/sluggish/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, sluggish thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sluggish/thesaurus/synonyms>.
MLASmart Define. "sluggish thesaurus" 1 April 2016. Web. 22 September 2026. <https://smartdefine.org/sluggish/thesaurus/synonyms>