80 entries under adjective topic. ×

1
out like a light(expression, idiom, awareness, unconscious)
1
out of it(expression, idiom, quiet, slow)
1
sacked out(expression, unconscious, concentrated, dormant)
1
slumbersome(dull, quiet, slow, heavy)
1
snoozing(quiet, unconscious, relaxing, asleep)
1
snoring(unconscious, dormant, comatose, slumbering)
1
soporific(dull, quiet, slow, heavy)
1
taking forty winks(expression, idiom, unconscious, dormant)
1
tranquil
1
unawake
1
yawning(dull, quiet, slow, heavy)
0
dead to the world(idiom, awareness)
0
fast asleep(idiom, awareness)
0
in a sound sleep(idiom, awareness)
0
numb
0
sleeping like a log(expression, idiom)
0
somnifacient
0
somnific
0
tired(dull, quiet, lethargic, sleepy)
0
undeveloped
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APASmart Define. (2015). sleeping thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sleeping/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleeping thesaurus" https://smartdefine.org/sleeping/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, sleeping thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sleeping/thesaurus/synonyms>.
MLASmart Define. "sleeping thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/sleeping/thesaurus/synonyms>