Music is emotional and you may catch a musician in a very unemotional mood or you may not be in the same frame of mind as the musician. So a critic will often say a musician is slipping.

It felt as if things were literally slipping through my fingers. Things were just streaming away from me. I lost my sense of humor. I'm still looking for that.

No government fights fascism to destroy it. When the bourgeoisie sees that power is slipping out of its hands it brings up fascism to hold onto their privileges.

My eyesight is not nearly as good. My hearing is probably going away. My memory is slipping too. But I'm still around.