Synonyms|8Antonyms|0|Broader|0Narrower|0Related|0
1
anesthetic
1
hypnotic
1
lullaby
1
morphine
1
nightcap
1
opiate
1
opium
1
soporific
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APASmart Define. (2015). sleep-producer thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sleep-producer/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleep-producer thesaurus" https://smartdefine.org/sleep-producer/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, sleep-producer thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sleep-producer/thesaurus/synonyms>.
MLASmart Define. "sleep-producer thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/sleep-producer/thesaurus/synonyms>