Downcast and Down in dumps

Downcast adjective - Directed down.

Down in dumps and downcast are semantically related In some cases you can use "Down in dumps" instead an adjective "Downcast".

Downcast and down in dumps are semantically related in depressed topic. Sometimes you can use "Downcast" instead an adjective phrase "Down in dumps", if it concerns topics such as blue, sad, unhappy, gloomy.