Synonyms of polygraph

polygraph

noun

ˈpä-lē-ˌgraf 

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

• lie detector

Example Sentences

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