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We found 19 dictionaries with English definitions that include the word truth serum: Click on the first link on a line below to go directly to a page where "truth serum" is defined. General (15 matching dictionaries) truth serum: American Heritage Dictionary of the English Language [home, info] truth serum: Collins English Dictionary [home, info] truth serum: Vocabulary.com [home, info] truth serum: Merriam-Webster's Online Dictionary, 11th Edition [home, info] truth serum: The Wordsmyth English Dictionary-Thesaurus [home, info] truth serum: Infoplease Dictionary [home, info] truth serum: Dictionary.com [home, info] truth serum: UltraLingua English Dictionary [home, info] Truth serum: Wikipedia, the Free Encyclopedia [home, info] truth serum: Rhymezone [home, info] truth serum: Free Dictionary [home, info] truth serum: Mnemonic Dictionary [home, info] truth serum: WordNet 1.7 Vocabulary Helper [home, info] truth serum: LookWAYup Translating Dictionary/Thesaurus [home, info] truth serum: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) truth serum: Encyclopedia [home, info] Medicine (2 matching dictionaries) truth serum: online medical dictionary [home, info] truth serum: Medical dictionary [home, info] Slang (1 matching dictionary) truth serum: Urban Dictionary [home, info]

Quick definitions from WordNet (truth serum) ▸ noun:  an intravenous anesthetic drug that has a hypnotic effect; induces relaxation and weakens inhibitions; is believed to induce people to talk freely