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sour

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adjective sour pronunciation in American English /saʊr/ 
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adjectivesour
comparativesourer
superlativesourest
  1. 1
    with a taste like a lemon

    Use a quart of sour pie cherries.

    The lemonade is still too sour.

    1. a.
      with an unpleasant taste or smell, especially because of no longer being fresh

      The milk's gone sour.

      Synonyms and related words for this sense of sour
      Synonyms and related words for this sense of sour
  2. 2
    unpleasant, unfriendly, or in a bad mood

    Linda's so angry and sour sometimes.

    When I said hello, he gave me such a sour look!

    Synonyms and related words for this sense of sour

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