truth serum

== English == === Noun === truth serum (countable and uncountable, plural truth serums or truth sera) (informal, medicine) A psychoactive medication, especially one administered by injection, which supposedly renders a person cooperative and disposed to respond honestly to questions. Synonym: truth drug ==== Coordinate terms ==== ==== Translations ==== === See also === lie detector === References === “truth serum”, in OneLook Dictionary Search.