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
Back at the safe house, Kyle and the gang are questioning Gutierrez on the polygraph while the maid, his informant in the Carrillo home, is having a much quieter chat with Kaitlyn.
—
Andy Andersen, Vulture, 1 Dec. 2024
In between Tapp's nine interrogations, detectives also administered seven polygraph exams.
—Anne-Marie Green, Judy Rybak, CBS News, 16 June 2018
The whole group seems to accept the definite possibility that their captive is telling the truth, but Kaitlyn orders a thirty-milligram methylphenidate injection and polygraph test, just to be safe.
—Andy Andersen, Vulture, 24 Nov. 2024
Williamson was later asked by sheriff’s investigators to take a polygraph test.
—Jordan D. Brown, CNN, 24 Nov. 2024
See all Example Sentences for polygraph 
Andy Andersen, Vulture, 1 Dec. 2024
In between Tapp's nine interrogations, detectives also administered seven polygraph exams.
—Anne-Marie Green, Judy Rybak, CBS News, 16 June 2018
The whole group seems to accept the definite possibility that their captive is telling the truth, but Kaitlyn orders a thirty-milligram methylphenidate injection and polygraph test, just to be safe.
—Andy Andersen, Vulture, 24 Nov. 2024
Williamson was later asked by sheriff’s investigators to take a polygraph test.
—Jordan D. Brown, CNN, 24 Nov. 2024
See all Example Sentences for polygraph
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Cite this Entry
“Polygraph.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/polygraph. Accessed 22 Jan. 2025.
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