Definitions for shitlist
Random House Webster's College Dictionary
or shit′ list`
a number of persons held in extreme disfavor.
Category: Common Vocabulary, Status (usage)
* Vulgar Slang..
Origin of shitlist:
blacklist, black book, shitlist(noun)
a list of people who are out of favor
A group of people held in disregard or targeted for revenge, etc.
Origin: shit + list