From the German "weltschmertz", meaning "world pain." Purposeful mispronunciation
has altered it to its current
form, possibly due to its hollow feeling, not unlike hearing your own echoes in a well. A fairly popular word for a deep, lonely, though passing depression, used among
in the Asheville-Black Mountain-Montreat area of Western North Carolina
(though most of the users are not originally from that area).