Definition of "underhanded" []

• Done by moving the hand (and arm) from below. (adjective)
• Sly, dishonest, corrupt, cheating. (adjective)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "Perkins, worn out, irritated by, if not angry at, what he termed the underhanded lying of the opposition, drove home for luncheon, and found his wife and her mother in a state of high dudgeon."
• "Frederick and Mary Ann Brussat go a step further in underhanded criticism, comparing the movie to The Lion, the Witch, and the Wardrobe in an apparent attempt to give it a Christian link and then add, "Naturally, a female is one of the main temptations Will must overcome.""
• "If the overstuffed, unzipped, unsealed bags contain more absentee ballots than were recorded on the transmittal sheet, then something underhanded is being attempted."