līˈar noun

A person who lies, esp habitually

lyˈing adjective

Addicted to telling lies

The habit of telling lies

lyˈingly adverb

lie detector noun

An instrument claimed to detect lying by recording abnormal involuntary bodily reactions in a person not telling the truth

give someone the lie (archaic, in his or her throat)

To accuse someone directly of lying

give the lie to

1. To accuse of lying
2. To prove false

lie in one's throat or through one's teeth (usu facetious)

To lie shamelessly

white lie

A minor falsehood, esp one uttered for reasons of tact, etc