in a (blue) funk
slang Feeling sad or unhappy for a lengthy period of time. Ever since I got rejected from my first-choice college, I've been in a funk. I'm taking Don out tonight because he's been in a blue funk since his wife left him.
in a (blue) funk
sad; depressed. I've been in a blue funk all week. Don't get in a funk about your job. Things'll get better.