dep 1
Weariness with the same old issues that you’ve always had—the same boring flaws and anxieties you’ve been gnawing on for years, which leaves them soggy and tasteless and inert, with nothing interesting left to think about, nothing left to do but spit them out and wander off to the backyard, ready to dig up some fresher pain you might have buried long ago.”
dep 3
Weltschmerz is the depressing feeling you get when comparing the actual state of the world to the picture you have in your head of how the world should be, and knowing that the picture in your head can never exist.
dep 2
It describes the feeling of being tired of life. It is either used for people who are fed up and depressed, or for people who’ve done something out of character as a way to ‘spice up’ their dull lives (they may have been lebensmüde as a reason for doing something out of character).