Synonyms|90Antonyms|1|Broader|9Narrower|85Related|1k
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knock-out drop
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lenitive
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luminal
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nightcap(noun, sedative, snoozy, codeine, sedative-hypnotic)
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phenobarbitone
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red devil(expression, idiom)
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sedative-hypnotic(noun, sedative, snoozy, codeine)
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sedative drug
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sleeping-pill
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thiopental
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APASmart Define. (2015). barbiturate thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/barbiturate/thesaurus/synonyms
ChicagoSmart Define. 2015. "barbiturate thesaurus" https://smartdefine.org/barbiturate/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, barbiturate thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/barbiturate/thesaurus/synonyms>.
MLASmart Define. "barbiturate thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/barbiturate/thesaurus/synonyms>