Men*da"cious (?), a. [L. mendax, -acis, lying, cf. mentiri to lie.]
1.
Given to deception or falsehood; lying; as, a mendacious person.
2.
False; counterfeit; containing falsehood; as, a mendacious statement.
-- Men*da"cious*ly, adv. -- Men*da"cious*ness, n.
© Webster 1913.