sneaky Synonyms

underhand furtive surreptitious stealthy sneak underhanded slippery underground tricky tricksy slinking treacherous slinky subversive subreptitious snide sly sneaking snaky under the counter unhonest undercover pussly unethical cloak-and-dagger underarm cunningham machiavellian below the belt dodgy under-the-table two-faced duplicitous untrustworthy wily unscrupulous unprincipled slick skulking dirty devious dern deceptive deceitful cunning crooked crafty covinous covert conniving