4
numb(adjective, calm, still, inactive, inert)
4
ponderous(adjective, heavy, tedious, dreary, cumbersome)
4
quiet(adjective, calm, gentle, flat, slow)
4
somnolent(adjective, dull, careless, indifferent, idle)
4
stationary(adjective, calm, quiet, smooth, still)
4
supine(adjective, dull, careless, indifferent, idle)
4
tasteless(adjective, dull, weak, dead, tedious)
4
weak(adjective, dull, feeble, dead, tedious)
4
wearisome(adjective, dull, weak, stupid, boring)
4
weary(adjective, dull, flat, careless, indifferent)
3
at rest(expression, adjective, idiom, calm, quiet)
3
banal
3
catatonic(adjective, inert)
3
commonplace(adjective, dull, simple, flat, plain)
3
cool(adjective, calm, dull, quiet, flat)
3
desolate
3
drugged(adjective, lethargic)
3
expired
3
feeble(adjective, dull, weak, soft, obscure)
3
flavorless(adjective, excite)
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APASmart Define. (2015). lifeless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/lifeless/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifeless thesaurus" https://smartdefine.org/lifeless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, lifeless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/lifeless/thesaurus/synonyms>.
MLASmart Define. "lifeless thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/lifeless/thesaurus/synonyms>