underhand

1 given to or marked by cheating and deception willing to stoop to underhand methods in order to win Synonyms of underhand bent [chiefly British], crooked, deceptive, double-dealing, duplicitous, fast, fraudulent, guileful, rogue, shady, sharp, shifty, dishonest, underhandedWords Related to underhand unconscionable, unethical, unprincipled, unscrupulous; deceitful, deceiving, deluding, delusive, delusory, false; artful, beguiling, cagey (also cagy), crafty, cunning, foxy, slick, sly, subtle, wily; defrauding, devious, furtive, slippery, sneaking, sneaky, trickish, tricky; insidious, perfidious, treacherousNear Antonyms of underhand conscientious, decent, ethical, honorable, just, scrupulous, upright; forthright, straightforwardAntonyms of underhand aboveboard, honest, straight

2 undertaken or done so as to escape being observed or known by others the congressman's underhand attempt to slip several pork barrel items into the bill Synonyms of underhand backstairs, behind-the-scenes, clandestine, covert, furtive, hole-and-corner, hugger-mugger, hush-hush, private, privy, sneak, sneaking, sneaky, stealth, stealthy, surreptitious, undercover, underground, secret, underhandedWords Related to underhand back-channel, closed-door, off-the-books, off-the-record; classified, confidential, restricted, top secret, undisclosed; concealed, hidden, secreted, subterranean, unadvertised, unexposedNear Antonyms of underhand acknowledged, avowed; aboveboard, straightforward, unconcealed, undisguised; unclassified, unrestricted; clear, evident, manifest, obvious, patent, plainAntonyms of underhand open, overt, public