The Oxford Thesaurus An A-Z Dictionary of Synonyms - souradj.

1) acid, acidic, tart, vinegary, lemony, acidulous or acidulent, acidulated, acescent, acerbic: This apple has a pleasant, slightly sour taste. Do you like sour dill pickles? 2 turned, bad, (gone) off, fermented, curdled, rancid, spoilt or spoiled: If the food is sour, throw it away. 3) disagreeable, unpleasant, distasteful, bad, nasty, bitter, terrible: The poor service and facilities made the entire holiday a very sour experience. 4) acrimonious, bitter, embittered, unpleasant, churlish, ill-natured, ill-tempered, bad-tempered, crusty, curmudgeonly, crabbed, crabby, grouchy, cross, cranky, testy, petulant, impatient, abrupt, nasty, curt, caustic, brusque, peevish, snappish, edgy, sullen, morose, gloomy, discontented: The waitress's sour expression matched her sour disposition. --v. 5) turn, spoil, curdle, go bad or off, ferment: Milk sours quickly in this climate if you don't refrigerate it. 6) embitter, acerbate, disenchant, exasperate, vex, Colloq peeve: Being forced to practise for hours when a child was what soured my enjoyment of playing the piano.