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polygraph

[pol-i-graf, -grahf] / ˈpɒl ɪˌgræf, -ˌgrɑf /
NOUN
lie detector
Synonyms
WEAK
polygraph machine psychogalvanic skin response psychogalvanometer

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But it’s hard to imagine anyone would retain a desire to like the guy after he made them endure a polygraph to assess his own popularity.

From Salon • Apr. 24, 2026

The person in question had no alibi for the night of the murder and had failed two polygraph tests, according to police records.

From Slate • Apr. 6, 2026

The DEA is supporting the Bolivian government as it conducts "reliability" screens on anti-narcotics officers using polygraph lie detectors.

From Barron's • Apr. 1, 2026

Perez requested a polygraph test and failed it, Flores testified.

From Los Angeles Times • Feb. 19, 2026

Lie-detection tests are notoriously inaccurate, and calculations similar to the above demonstrate why truthful people who flunk polygraph tests usually outnumber liars.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos

Vocabulary lists containing polygraph

Psychology

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