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

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

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