The Collaborative International Dictionary
Mendacious \Men*da"cious\, a. [L. mendax, -acis, lying, cf. mentiri to lie.]
Given to deception or falsehood; lying; as, a mendacious person.
False; counterfeit; containing falsehood; as, a mendacious statement. [1913 Webster] -- Men*da"cious*ly, adv. -- Men*da"cious*ness, n.
Wiktionary
adv. In a lying or deceitful manner.
WordNet
adv. in a mendacious and untruthful manner; "I told him, quite untruthfully, that I had just returned from leave" [syn: untruthfully] [ant: truthfully]
Usage examples of "mendaciously".
Denoriel had been and when he admitted, most mendaciously, that he had been in France, invited Denoriel to come home with him to dinner.
He would certainly ring again, probably later that evening, she declared mendaciously, and she was quite happy to stay out of her bed until he did.
We, their parents, would have plenty of explaining to do, not in detail but not mendaciously either, and plenty of reassurance to give, to Ben still more than Val.
She forced a smile to her lips, and said, mendaciously, but placably: "I'm afraid I did promise to let Mr Carleton take me down to supper, Beckenham!