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1. The feeling you get when an obscure writer or band that you like becomes popular because their book gets made into a big movie or their song is in a commercial and it leaves you all disgruntled because you knew about them way back when.

2. Feeling similar to the above caused by the sudden surge in the popularity of a certain person or entity.

Literal meaning (German): Sadness stemming from original loyalty
The grundtreuentraurigkeit was too much for Bob to take when he read that the Go!Team would be playing the Superbowl halftime show.
by Amit999 October 13, 2005
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