Hater

"Hater" is an insult often used by people who are too emotionally attached to a celebrity to accept any criticism of that celebrity no matter how true the criticism is. It is also often used even if the "hater" qualifies their criticism with a positive statement that far outweighs any negative statement made. To call someone a "hater" is an implicit accusation of jealousy, bitterness, and (in some cases) racism. In situations where the "hater" is actually more financially, academically, or socially successful than the accuser, the irony of that fact will always fly over the accuser's head.