noun
funk
FUNGK/fʌŋk/
A state of sadness, anxiety, or low spirits.
She sits in a funk, too discouraged to enjoy her usual activities.

Etymology
The fear sense probably comes from a Scottish and Northern English verb meaning “shrink through fear,” whose origin is unknown. The low-spirits sense may have developed from the earlier meaning “cowering state of fear.”
In context
I'll go through a funk and I'll be like, "Okay, just get outside into nature
More examples
- A walk helped him shake his funk.
- I was in a funk all weekend.
- The team fell into a funk after the defeat.
Forms
funk
Similar words
- gloom
- Emphasizes sadness rather than anxious discouragement.
- depression
- Depression can describe a more serious or sustained condition than a passing funk.