15
indolent(adjective, dull, quiet, moving, easy)
15
quiescent(adjective, calm, dull, quiet, moving)
15
static(adjective, calm, quiet, smooth, moving)
14
dormant(adjective, calm, dull, quiet, moving)
14
languorous(adjective, dull, weak, moving, easy)
14
slack(adjective, dull, quiet, moving, flat)
14
slothful(adjective, dull, quiet, moving, flat)
13
flat(adjective, quiet, slow, cold, indifferent)
13
immobile(adjective, calm, quiet, moving, gentle)
13
stationary(adjective, calm, quiet, smooth, moving)
12
slow(adjective, dull, quiet, weak, easy)
11
supine(adjective, dull, weak, easy, slow)
11
neutral(adjective, cold, dead, apathy, passive)
11
phlegmatic(adjective, dull, quiet, weak, moving)
11
sleepy(adjective, dull, quiet, moving, slow)
10
lackadaisical(adjective, dull, quiet, weak, easy)
9
insensible(adjective, quiet, cold, dead, senseless)
9
unresponsive(adjective, dull, quiet, moving, flat)
8
leaden(adjective, dull, quiet, weak, moving)
8
impassive(adjective, dull, weak, moving, easy)
11 years ago|22k views|share |citing 
APASmart Define. (2015). inert thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/inert/thesaurus/synonyms
ChicagoSmart Define. 2015. "inert thesaurus" https://smartdefine.org/inert/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, inert thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/inert/thesaurus/synonyms>.
MLASmart Define. "inert thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/inert/thesaurus/synonyms>