be down in the mouth

be down in the mouth

To be visibly sad or depressed. Molly's been moping around all week, and I have no idea why she's so down in the mouth. Rob has been down in the mouth ever since Gloria broke up with him.
See also: down, mouth
Farlex Dictionary of Idioms.
See also:
  • be down in the dumps
  • come a gutser
  • come down with
  • be down to (one)
  • be down to somebody/something
  • be down to something
  • be down to (do something)
  • bounce up and down
  • close down
  • close down and shut down