tranquilizer tranquilize • tranquilizing · · · Info · Definitions · Synonyms · Characters · · tranquilizer · · Text Latin · · Script 12 · · Length Definitions · · · (noun) a drug used to reduce stress or tension without reducing mental clarity. Synonyms: tranquillizer, tranquilliser, antianxiety agent, ataractic drug, ataractic agent, ataractic. · · Noun Definition 1 Synonyms · · · tranquillizer · · Synonym 1 tranquilliser · · Synonym 2 antianxiety agent · · Synonym 3 ataractic drug · · Synonym 4 ataractic agent · · Synonym 5 ataractic · · Synonym 6 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E q latin small letter q U+0071 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 z latin small letter z U+007A