Synonyms and related words :
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