amoral, conscienceless, corrupt, corrupted, criminal, crooked, dark, devious, dishonest, dishonorable, doubtful, dubious, evasive, felonious, fishy, fraudulent, ill-got, ill-gotten, immoral, inaccurate, indirect, inexact, insidious, not kosher, questionable, rotten, shady, shameless, shifty, sinister, slippery, suspicious, tricky, unconscienced, unconscionable, uncritical, underhand, underhanded, unethical, unexacting, unfinical, unfussy, unmeticulous, unpainstaking, unparticular, unprecise, unprincipled, unpunctilious, unpunctual, unrigorous, unsavory, unscrupulous, unstraightforward, without remorse, without shame