idioms describing the state of depression

[Olenek]

Hi,

I've found some idioms describing the state of depression:

1) "To be in the doldrums" = "To be (down) in the dumps" = "To be down in the mouth" – feeling sad and lacking the energy to do anything, filled with melancholy and despondency.

2) "To be sick as a pig" = "To be crestfallen" - dejected, depressed, or disheartened.

IMHO the idiom "To be crestfallen" is used only in literature
(Tom's cheeks burned. He gathered himself up and sneaked off, crushed and crestfallen (Mark Twain, The Adventures of Tom Sawyer, 1876);
Hall and Henfrey, rather crestfallen, tiptoed back to the bar (H. G. Wells, The Invisible Man, 1897)).

Do you use/ know these or other idioms with the same sense?

Many Thanks for all your replies!

[freezeframe]

to be bummed out

to be blue/to have the blues (Don't know if many people use it but you can hear it often in songs)

[SanMar]

Related to depression

to be in a rut
to be in a funk
(making no progress, feeling stuck, unmotivated, bummed out)

He's been in a rut since February.

I usually use rut or bummed out.

Not a teacher.

[Gillnetter]

I'm so low I have to look up to see a snake's belly.

[freezeframe]

to be down
or
feeling down

[Tdol]

to be in a rut
to be in a funk
(making no progress, feeling stuck, unmotivated, bummed out)

In BrE, in a funk suggests that someone is scared, often unable to act because of fear.

[dangauss]

What about simply saying: I feel lousy today.

Many of my private students enjoy learning about and using the word "lousy".

Technically or strictly it doesn't mean "depressed" but it implies that the person is not feeling at his/her best.

i.e. Ralph: Bob, what's wrong? You look different today.
Bob: I just feel lousy today.

[tks499]

thanks a lot