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 Both Leroy and Jessie refused polygraph tests, according to the report. — Annalise Peterson, NBC news, 23 Aug. 2026 My son voluntarily took a polygraph examination regarding these allegations and passed. — Kathleen Perricone, Entertainment Weekly, 21 Aug. 2026 She was also asked to submit to a polygraph, the results of which were inconclusive, according to the suit. — Amber Gaudet updated August 20, Charlotte Observer, 20 Aug. 2026 Utilizing polygraphs, cardiographs, and encephalographs, scientists have proven a complex plant intelligence that determines levels of stress and emotions, as well as ESP (extrasensory perception) and fear of dying. — Literary Hub, 20 Aug. 2026 See All Example Sentences for polygraph

Recent Examples of Synonyms for polygraph

lie detector

Noun

Past Göteborg Focus strands have been accompanied by a memorable event such as introducing a lie detector at the 2026 Göteborg, which focused on current concepts of truth.

— John Hopewell, Variety, 6 Nov. 2026
The more familiar and unofficial term – lie detector tests – likely fuels that perception.

— Brian O'Neill, The Conversation, 10 Sep. 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 14 Nov. 2026.

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Synonyms of polygraph

noun

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