Synonyms and related words :
abhorrent, abominable, bitter, detestable, disagreeable, disgusting, dislikable, displeasing, flat, flavorless, foul, foul-tasting, fulsome, galling, grievous, hateful, ill-flavored, insipid, intolerable, loathsome, mislikable, nasty, nauseating, nauseous, objectionable, obnoxious, odious, offensive, painful, repellent, repugnant, repulsive, revolting, savorless, sour, tasteless, thankless, ugly, unalluring, unappealing, unappetizing, unattractive, uncongenial, undelectable, undelicious, undesirable, unengaging, unenjoyable, uninviting, unlikable, unlovable, unpalatable, unpleasant, unpleasing, unsavory, untasteful, untasty, unwelcome,