as in lie detector
an instrument for detecting physical signs of the tension that goes with lying intelligence agents were trained to fool the polygraph

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Recent Examples of polygraph Kelly reports on the polygraph test Bradley took and the questions Kansas City Police Department investigators asked the couple. Lisa Gutierrez, Kansas City Star, 13 Mar. 2025 Every operative admits that infidelity runs rampant in their line of work even before George hooks each up to a polygraph machine. Amy Nicholson, Los Angeles Times, 13 Mar. 2025 Meanwhile, the Department of Homeland Security started performing polygraph tests on employees in an attempt to learn who might be leaking information, according to four sources familiar with the matter. Josh Feldman, NBC News, 9 Mar. 2025 The Department of Homeland Security is administering polygraph tests to its personnel to determine who may be leaking information to the media about its ongoing immigration raids, an agency spokesperson confirmed to CBS News Saturday. Olivia Rinaldi, CBS News, 8 Mar. 2025 See All Example Sentences for polygraph

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“Polygraph.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/polygraph. Accessed 28 Apr. 2025.

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