Synonyms and related words :
abhorrent, bitter, disagreeable, dislikable, displeasing, distasteful, foul-tasting, ill-flavored, intolerable, mislikable, odious, sour, thankless, ugly, unalluring, unappealing, unappetizing, unattractive, uncongenial, undelectable, undelicious, undesirable, unengaging, unenjoyable, unlikable, unlovable, unpalatable, unpleasant, unpleasing, unsavory, untasteful, untasty, unwelcome