Synonyms and related words :
amoral, artful, conscienceless, corrupt, corrupted, crafty, criminal, crooked, cunning, dark, deceitful, devious, dishonest, dishonorable, disingenuous, doubtful, dubious, evasive, evil, faithless, FALSE, felonious, fishy, fraudulent, ill-got, ill-gotten, immoral, improper, inaccurate, indirect, inexact, insidious, knavish, mercenary, not kosher, perfidious, questionable, roguish, rotten, scheming, shady, shameless, shifty, sinister, slippery, sly, sneaky, stick-at-nothing, suspicious, treacherous, tricky, unconscienced, unconscientious, unconscionable, uncritical, underhand, underhanded, unethical, unexacting, unfinical, unfussy, unmeticulous, unpainstaking, unparticular, unprecise, unprincipled, unpunctilious, unpunctual, unrigorous, unsavory, unseemly, unstraightforward, untrustworthy, venal, wicked, without remorse, without shame, wrongful