Thesaurus results for POLYGRAPH

polygraph

noun

ˈpä-lē-ˌgraf

Definition of polygraph

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 Extensive efforts made in the many months since Lilly and Jack went missing have included a grid search of the woods surrounding their home, plus the use of cadaver dogs and polygraph examinations, according to the CBC. — Paloma Chavez, PEOPLE, 13 Aug. 2026 Carla’s boyfriend and family members were ruled out after passing polygraphs, according to Plautz. — Dalia Faheid, CNN Money, 21 June 2026 The Washington Post reported months later, in October, that the Pentagon planned to impose NDAs for its workers, along with random polygraph tests. — Connor Greene, Time, 27 May 2026 But Washington passed a polygraph test and the case sat dormant for several years. — John Annese, New York Daily News, 22 May 2026 See All Example Sentences for polygraph

Recent Examples of Synonyms for polygraph

lie detector

Noun

The building is outfitted with advanced technology, including three interview rooms with lie detectors that only use retina movement to base its findings.

— Rachel Royster, Fort Worth Star-Telegram, 24 June 2026
Back in 2022, the Good American co-founder took a lie detector test with her sister, Kourtney Kardashian Barker, for a Vanity Fair video.

— Gina Kalsi, PEOPLE, 11 June 2026

Definition of lie detector

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Polyglot

polygraph

polygraphs

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“Polygraph.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/polygraph. Accessed 1 Sep. 2026.

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Synonyms of polygraph

noun

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