down in the mouth[adjective]Synonyms: downcast, bad, blue, crestfallen, dejected, depressed, disconsolate, down, downhearted, low
[TahlilGaran] English Synonym Dictionary ▲
down in the mouth{adj. phr.}, {informal} Sad or discouraged; gloomy; dejected.
The boys were certainly down in the dumps when they heard that their team had lost. [TahlilGaran] English Idioms Dictionary ▲