a drug, as the barbiturate thiopental, that induces in the subject a desire to talk or a state of heightened suggestibility, used in psychotherapy and in interrogation to discover repressed or consciously withheld information.
- Often truth drug [trooth-druhg] /ˈtruθ ˌdrʌg/ .
- Compare narcoanalysis.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use truth serum in a sentence
FOIA documents reveal that the CIA saw LSD as a potential, “truth serum.”What Cold War CIA Interrogators Learned from the Nazis | Annie Jacobsen | February 11, 2014 | THE DAILY BEAST
Its potential use as a truth serum would also become a cautionary tale.What Cold War CIA Interrogators Learned from the Nazis | Annie Jacobsen | February 11, 2014 | THE DAILY BEAST
The discussion of the role of truth serum in the American judicial system is a worthy one.
As judge has approved the use of truth serum if the alleged Batman shooter attempts an insanity defense.
What, then, was the truth that the truth serum was seeking to impel?
The flood of force pouring through my head was more effective than any truth serum.Valley of the Croen | Lee Tarbell
Now Mr. Warren, I don't know if you got any confidence in the lie detector test and the truth serum, and so on.Warren Commission (5 of 26): Hearings Vol. V (of 15) | The President's Commission on the Assassination of President Kennedy
Because as it stands now—and the truth serum, and any other—Pentothal—how do you pronounce it, whatever it is.Warren Commission (5 of 26): Hearings Vol. V (of 15) | The President's Commission on the Assassination of President Kennedy
What sort of talents and abilities did he possess, that he could react thus to a truth-serum?Man of Many Minds | E. Everett Evans
So the doctors gave him truth-serum so he would not try to conceal anything from them.The Leader | William Fitzgerald Jenkins (AKA Murray Leinster)