Adjective down in the mouth has 1 sense
  1. blue, depressed, dispirited, down, downcast, downhearted, down in the mouth, low, low-spirited - low in spirits; "lonely and blue in a strange city"; "depressed by the loss of his job"; "a dispirited and resigned expression on her face"; "downcast after his defeat"; "feeling discouraged and downhearted"
    Antonym: elated (indirect, via dejected)
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