amoral bitter conscienceless corrupt corrupted criminal crooked dark dead derogatory devious dilute diluted disagreeable discreditable disgusting dishonest dishonorable dislikable displeasing disreputable distasteful doubtful dubious evasive fade felonious fishy flat flavorless foul-tasting fraudulent gruelly ignoble ignominious ill-flavored ill-got ill-gotten immoral inane indifferent indirect infamous inglorious insidious insipid jejune mild milk-and-water nasty nauseating not kosher notorious objectionable obnoxious offensive pappy pulpy questionable repellent repugnant repulsive revolting rotten sapless savorless seamy shady shameless shifty sickening sinister slippery sordid sour spiceless stale suspicious tasteless thankless thin tricky ugly unalluring unappealing unappetizing unattractive unconscienced unconscientious unconscionable undelectable undelicious underhand underhanded undesirable unengaging unenjoyable unethical unflavored uninviting unlikable unpalatable unpleasant unpleasing unpraiseworthy unprincipled unrespectable unscrupulous unstraightforward untasteful untasty unwelcome vapid washy watered watered-down watery weak wishy-washy without remorse without shame