Synonyms and related words :
ambiguous, amoral, beguiling, blank, catchy, conscienceless, corrupt, corrupted, criminal, crooked, dark, deadpan, deceiving, deceptive, delusive, delusory, devious, dishonest, dishonorable, doubtable, doubtful, dubious, dubitable, eellike, empty, equivocal, evasive, expressionless, fallacious, FALSE, felonious, fraudulent, funny, glassy, hallucinatory, ill-got, ill-gotten, illusive, illusory, immoral, impassive, implausible, improbable, indirect, inexpressive, insidious, misleading, not kosher, odd, peculiar, piscatorial, piscatory, pisciform, piscine, poker-faced, problematic, queer, questionable, rotten, selachian, shady, shameless, sharkish, shifty, sinister, slippery, strange, suspect, suspicious, trickish, tricksy, tricky, uncertain, unconscienced, unconscientious, unconscionable, underhand, underhanded, unethical, unexpressive, unlikely, unprincipled, unsavory, unscrupulous, unstraightforward, vacant, without remorse, without shame, wooden