Synonyms and related words :
actionable, against the law, amoral, anarchic, anarchistic, anomic, black-market, bootleg, chargeable, conscienceless, contraband, contrary to law, corrupt, corrupted, criminal, crooked, dark, devious, dishonest, dishonorable, doubtful, dubious, evasive, evildoing, fishy, flawed, fraudulent, ill-got, ill-gotten, illegal, illegitimate, illicit, immoral, impermissible, indirect, iniquitous, insidious, irregular, justiciable, lawless, malefactory, malfeasant, nonconstitutional, nonlegal, nonlicit, not kosher, outlaw, outlawed, punishable, questionable, rotten, shady, shameless, shifty, sinful, sinister, slippery, suspicious, triable, tricky, unallowed, unauthorized, unconscienced, unconscientious, unconscionable, unconstitutional, under-the-counter, under-the-table, underhand, underhanded, unethical, unlawful, unofficial, unprincipled, unsavory, unscrupulous, unstatutory, unstraightforward, unwarrantable, unwarranted, wicked, without remorse, without shame, wrong, wrongdoing, wrongful