Heyter (emphasis on the first "e") is a fierce opponent of anything or anyone. The word hater is translated from English as "a hater" and comes from the verb to hate (hate).
The well-known saying "haters gonna hate" means that if a person previously did not like something, then under no circumstances will he like it. For example, if you are fucking hunting with Justin Bieber, then you are unlikely to ever change the attitude to his work, even if he sings like Freddie Mercury.
Heyter is in the list: Slang