untrustworthy

ambidextrous, crooked, defrauding, dishonest, dissembling, double-dealing, duplicitous, faithless, fast, fraudulent, knavish, lying, mendacious, untruthful

beguiling, deceitful, deceiving, deceptive, deluding, delusive, delusory, fallacious, false, misleading, specious

artful, crafty, cunning, devious, foxy, guileful, shady, shifty, slick, sly, sneaking, sneaky, subtile, subtle, trick, trickish, tricky, underhand, underhanded, wily

inaccurate, incorrect, wrong

bewildering, confounding, distracting, perplexing, puzzling

bogus, counterfeit, fake, feigned, forged, jive [slang], phony (also phoney), sham, spurious

insidious, perfidious, treacherous

ambiguous, circuitous, equivocal, evasive

artificial, backhanded, hypocritical, insincere, left-handed, two-faced