adulterate, bamboozle, beguile, cabal, cahoot, clandestine, collusion, conceal, conniving, disingenuous, eavesdrop, fabricate, fallacy, fraudulent, furtive, glib, guile, hypocrisy, infiltrate, machiavellian, malinger, mendacious, misinformation, misleading, misrepresent, perfidious, phony, posturing, pretended, pretender, pretense, pretext, prevaricate, renege, skew, skullduggery, sophistry, specious, spurious, traduce