blue

(adjective) depressed

Example Sentence:

I’m sorry I’ve been so blue lately. I’m just upset because my girlfriend left me.

Anna is blue because her father just died.

Media:

Similar idioms:

1. bummed
2. bummed out
3. down in the mouth
4. downhearted
5. in a funk
6. blue in the face
7. down in the dumps
8. once in a blue moon
9. out of the blue