1. (Haters ; Plural) Having Anger Towards Everybody Reaching Success.
2. Someone who has jealousy towards someone's successfulness and achievements.
3. Someone that talks trash about people he/she jealous of, but they just don't realize that they're still giving attention/fame to the person they're hating on.
Hater: I hate Insert famous person name here
Person 2: So?
Hater: I HATE HIM/HER, HE/SHE SHOULD DIE, NOBODY SHOULD LIKE! HIM/HER. HE/SHE SHOULD NOT EVEN BECOME FAMOUS!!!11!
Person 2: You know that you're still giving him/her attention right?