Someone who is enraged by evidence of another's success and as a result has to try to one up the successful person or simply put the successful person down. Hating is much more than just being jealous of the person who has done well. The hater would find much satisfaction in seeing some form of misfortune come to that person.
Haters may also simply find satisfaction in someone else’s misfortune. When a friend falls off a bicycle and lands in the sewer for instance, it is a normal reaction to laugh at the situation. However, a hater will respond slightly differently by laughing at the person in a ridiculing manner.
Haters have a special link to one another and they tend to fuel each others hate by hating in groups. It may be a form of stress relief or something entirely different but they do seem to become happy from the escalation of hate for a person that arises in these groups.
Haters generally tend to hate people who are doing well even more so - racists excluded - if they are closer or more similar to them or of a similar social class.
When Jesus talked about prophets not being welcome in their own home town, he was probably talking about the haters.
There is one African tribe that used to be famous for hating its best hunters. A great hunter would make the biggest catch in months for instance, and then everybody would put him down by telling him that they couldn’t believe that he could expect them to eat something so puny and unhealthy looking.
However, hating is by no means limited to Africa. Hating exists all around the world. Among travellers for instance, Anglo-saxons from the UK, US and Australia are famous for hating, especially when a non anglo-saxon is doing well. This reputation is likely the result of a handful of haters that make a bad name for every Anglo-saxon, and even citizens of these nations who are not even anglo-saxon.
Sally: "Wow, China and India have been doing really well and a lot of jobs have been relocated due to the super-cheap labour. Are you worried about your job?"
Brian (hater in denial): "We’re in the only country that has quality management skills. Those guys are not smart enough. There’s no way that my job could ever be done by someone outside."
Shawn: "Damn, Kev’s been doing real good these days working his new job. He just got a new car and he paid cash. He’s looking for a house now too."
Wilma (hater): "I don’t believe it. That Kevin is not making that money from a new job. That fool be dealin’."
Peter (hater who is racist but probably doesn’t think so): "No way, mate. Ain’t no way, that this coloured fella goes to Oxford. How many black people go there, like 10? What are the chances?"