MENDACIOUSLY
mendaciously, untruthfully
(adverb) in a mendacious and untruthful manner; “I told him, quite untruthfully, that I had just returned from leave”
Source: WordNet® 3.1
Etymology
Adverb
mendaciously (comparative more mendaciously, superlative most mendaciously)
In a lying or deceitful manner.
Synonyms
• deceitfully
Source: Wiktionary
MENDACIOUS
Men*da"cious, a. Etym: [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.
Source: Webster’s Unabridged Dictionary 1913 Edition