Found 2 items, similar to untruthfully.
English → English (WordNet) Definition: untruthfully untruthfully adv : in a mendacious and untruthful manner; “I told him, quite untruthfully, that I had just returned from leave” [syn: mendaciously] [ant: truthfully]
English → English (gcide) Definition: Untruthfully Untruthful \Un*truth"ful\, a. Not truthful; unveracious; contrary to the truth or the fact. -- Un*truth"ful*ly, adv. -- Un*truth"ful*ness, n. [1913 Webster]