Deceitful vs. Mendacious: What's the Difference?

Given to cheating or deceiving.

Lying; untruthful

Deliberately misleading; deceptive.

False; untrue

Deliberately misleading or cheating.

(of a person) Lying, untruthful or dishonest.

Deceptive, two-faced.

(of a statement, etc) False or untrue.

Full of, or characterized by, deceit; serving to mislead or insnare; trickish; fraudulent; cheating; insincere.

Given to deception or falsehood; lying; as, a mendacious person.

Intended to deceive;

False; counterfeit; containing falsehood; as, a mendacious statement.

Marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another;

Given to lying;

Intentionally untrue;