2
indolent(adjective, dull, still, sluggish, lifeless)
2
inoperative(adjective, calm, dull, gentle, still)
2
insentient(adjective, unfeeling, numb, insensitive, dazed)
2
late lamented(expression, previous, former, deceased)
2
lax(adjective, dull, idle, sluggish, lazy)
2
lazy(adjective, dull, still, idle, sluggish)
2
no more(expression, calm, dead, lifeless, late)
2
obdurate(adjective, hard, tough, severe, cold)
2
oblivious(adjective, anxious, distant, distracted, absorbed)
2
out like a light(expression, adjective, idiom, calm, dead)
2
slack(dull, still, sluggish, lifeless, lazy)
2
slow(adjective, dull, quiet, heavy, tired)
2
static(adjective, calm, dull, quiet, flat)
2
thick-skinned(adjective, hard, tough, severe, cruel)
2
unalert(adjective, adverb, inattentive, negligent, unprepared)
2
unanimated(calm, dead, lifeless, late, drowsing)
2
unawake(adjective, awareness, sleeping)
2
unguarded(adverb, negligent, unprepared)
2
unprepared(adjective, adverb, inattentive, negligent)
2
unready(adjective, adverb, inattentive, negligent, unprepared)
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APASmart Define. (2016). asleep thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/asleep/thesaurus/synonyms
ChicagoSmart Define. 2016. "asleep thesaurus" https://smartdefine.org/asleep/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, asleep thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/asleep/thesaurus/synonyms>.
MLASmart Define. "asleep thesaurus" 8 February 2016. Web. 23 September 2026. <https://smartdefine.org/asleep/thesaurus/synonyms>