as in polygraph
an instrument for detecting physical signs of the tension that goes with lying
hooked the suspect up to a lie detector before interrogating him about the robbery
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Recent Examples of lie detector
The lie detector consists of the blind monk from the crucifix room at the Vatican and a cup of seltzer water.
—
Maggie Fremont, Vulture, 15 Aug. 2024
Riverside, California, investigators linked a man’s DNA to a 1979 cold case murder of a teenage girl, years after the same man passed a lie detector test about the crime, according to authorities.
—Greg Wehner, Fox News, 25 Nov. 2024
Press play above to see what happens when human lie detector meets skilled liar.
—Matt Webb Mitovich, TVLine, 21 Oct. 2024
Filmed in conjunction with Grande and Erivo’s joint Vanity Fair cover story, the lie detector test also gave the R.E.M. Beauty founder an opportunity to set the record straight on numerous plastic surgery rumors that have followed her over the past couple of years.
—Hannah Dailey, Billboard, 30 Sep. 2024
See all Example Sentences for lie detector 
Maggie Fremont, Vulture, 15 Aug. 2024
Riverside, California, investigators linked a man’s DNA to a 1979 cold case murder of a teenage girl, years after the same man passed a lie detector test about the crime, according to authorities.
—Greg Wehner, Fox News, 25 Nov. 2024
Press play above to see what happens when human lie detector meets skilled liar.
—Matt Webb Mitovich, TVLine, 21 Oct. 2024
Filmed in conjunction with Grande and Erivo’s joint Vanity Fair cover story, the lie detector test also gave the R.E.M. Beauty founder an opportunity to set the record straight on numerous plastic surgery rumors that have followed her over the past couple of years.
—Hannah Dailey, Billboard, 30 Sep. 2024
See all Example Sentences for lie detector
Thesaurus Entries Near lie detector
Cite this Entry
“Lie detector.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lie%20detector. Accessed 30 Jan. 2025.
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