Thesaurus results for POLYGRAPH

polygraph

noun

ˈpä-lē-ˌgraf

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

Synonyms & Similar Words

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lie detector

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of polygraph However, Baker's boyfriend, later identified as Chris Melton, per The Red & Black, was ruled out after passing a polygraph and providing an alibi. —

Emily Blackwood, PEOPLE, 2 May 2026 To tell man from machine, people rely on something called the Voight-Kampff test, which is a little like a polygraph; robot irises exhibit subtle tells when prompted. —

Will Gottsegen, The Atlantic, 24 Apr. 2026 Anxiety, fear and nervousness can all cause false positives in a polygraph test. —

Rupal Patel, CNBC, 15 Apr. 2026 That’s because victims may have stress and anxiety recounting their assault that the polygraph may interpret as deception. —

Jessica Schreifels, ProPublica, 27 Mar. 2026 See All Example Sentences for polygraph

Recent Examples of Synonyms for polygraph

lie detector

Noun

McGrail agrees to take a lie detector test.

— Peter Van Sant, CBS News, 14 May 2026
Kardashian later denied harming the garment in a November 2025 Vanity Fair lie detector video.

— Ariana Quihuiz, PEOPLE, 10 May 2026