Synonyms|37Antonyms|0|Broader|0Narrower|0Related|42
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idle
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inactive
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inanimate
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indifferent
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indolent
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inert
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inviting slumber(expression, idiom)
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irksome
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languorous
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lazy
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leisurely
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lethargic
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relaxed
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slow
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somnolent
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unconcerned
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unhurried
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APASmart Define. (2013). sleepier thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sleepier/thesaurus/synonyms
ChicagoSmart Define. 2013. "sleepier thesaurus" https://smartdefine.org/sleepier/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2013, sleepier thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sleepier/thesaurus/synonyms>.
MLASmart Define. "sleepier thesaurus" 18 May 2013. Web. 22 September 2026. <https://smartdefine.org/sleepier/thesaurus/synonyms>