polygraph

noun 0.832

polygrapher

noun 0.746

polygraphy

noun 0.629

truth serum

noun 0.586

liar

noun 0.576

truth drug

noun 0.563

interrogator

noun 0.542

detector

noun 0.537

lie

noun 0.535

metal detector

noun 0.535

detective

noun 0.516

lidar

noun 0.512

polarimeter

noun 0.506

paternity test

noun 0.506

private investigator

noun 0.506

big lie

noun 0.505

logic analyzer

noun 0.500