62 entries under indifferent topic. ×

6
passive(adjective, dull, quiet, careless, heavy)
6
phlegmatic(adjective, quiet, easy, slow, relaxed)
5
indolent(adjective, dull, quiet, easy, careless)
5
lackadaisical(adjective, dull, quiet, easy, slow)
4
motionless(adjective, dull, quiet, flat)
4
out of it(expression, adjective, idiom, dull, quiet)
4
slothful(adjective, dull, quiet, careless, heavy)
4
snoozy(adjective, dull, quiet, slow, careless)
3
flat(adjective, quiet, apathetic, lifeless)
3
quiescent(adjective, dull, quiet, flat)
2
flagging(adjective, dull, beat, slow, careless)
2
laggard(adjective, dull, quiet, easy, careless)
2
static(adjective, dull, quiet, flat)
1
dilatory(adjective, dull, quiet, moderate, easy)
1
acquiescent(adjective, quiet, flat, apathetic)
1
bearing(adjective, quiet, flat, apathetic)
1
compliant(adjective, quiet, flat, apathetic)
1
cool(adjective, quiet, apathetic, lifeless)
1
docile(adjective, quiet, flat, apathetic)
1
enduring(adjective, quiet, flat, apathetic)
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APASmart Define. (2016). sleepy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sleepy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, sleepy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sleepy/thesaurus/synonyms>.
MLASmart Define. "sleepy thesaurus" 18 February 2016. Web. 28 September 2026. <https://smartdefine.org/sleepy/thesaurus/synonyms>