80 entries under lifeless topic. ×

8
unmoving(adjective, quiet, still, inactive)
7
immobile(adjective, calm, dull, quiet, gentle)
7
inanimate(adjective, still, inactive, alive)
7
inoperative(adjective, action, calm, dull, weak)
7
phlegmatic(adjective, quiet, easy, heavy, indifferent)
6
asleep(adjective, calm, dull, quiet, gentle)
6
dull(adjective, careless, cold, indifferent, still)
5
indifferent(adjective, dull, quiet, careless, weary)
5
latent(adjective, calm, dull, quiet, gentle)
3
defunct(adjective, dull, cold, nonliving)
3
down(adjective, dull, still, sluggish)
3
spiritless(adjective, dull, careless, cold, indifferent)
3
yielding(adjective, quiet, flat, indifferent, apathetic)
2
acquiescent(adjective, quiet, flat, indifferent, apathetic)
2
exanimate(dull, cold, inactivity, nonliving)
2
extinct(dull, cold, nonliving, inorganic)
2
impassive(adjective, dull, heavy, stupid, still)
2
impotent(adjective, weak, inferior, still, inadequate)
2
nonliving(adjective, inorganic)
2
powerless(still, inadequate, limited, feeble, useless)
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APASmart Define. (2015). idle thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/idle/thesaurus/synonyms
ChicagoSmart Define. 2015. "idle thesaurus" https://smartdefine.org/idle/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, idle thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/idle/thesaurus/synonyms>.
MLASmart Define. "idle thesaurus" 23 October 2015. Web. 27 September 2026. <https://smartdefine.org/idle/thesaurus/synonyms>