A person that simply cannot be happy for another person's success. So rather than be happy they make a point of exposing a flaw in that person.

Hating, the result of being a hater, is not exactly jealousy. The hater doesnt really want to be the person he or she hates, rather the hater wants to knock somelse down a notch.
Susan: You know, Kevin from accounting is doing very well. He just bought a house in a very nice part of town.

Jane (hater): If he is doing so well why does he drive that '89 Taurus?
by dion February 04, 2005
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A term used to deflect criticism and erect a mental dissonance that allows one to ignore further criticism in continued delusion of one's own competence, skill or talent.
In addressing someone's inability to sing in tune.

Person 1: You're not good a good singer.
Person 2: Nah, I want to believe that I'm good. Therefore, you're just a jealous hater and you're opinion is worthless.
by Horatio Watson December 30, 2011
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Somebody that calls you on your bullshit.
"Gotta love be greeted by a hater. Geez they're all over the webs nowadays. Take my story, leave my story, whatever. Not here to impress you or anyone else"
by A. Nonymous October 07, 2016
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A word that is overused, or a label given to you when your being truthful and reasonable about something, and people don't want to accept the fact your right.
ME- Bow Wow is a fake thug, who has a ghostwriter.
Dumbass- Nah ah, your just a hater.
ME- No its the truth JD wrote for him, and hes no thug, he never lived in the hood.
by Dominican_Hustle August 24, 2008
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Overused word that people like to use just because someone else expresses a dislike for a certain individual.
PERSON 1: I don't like Beyonce's new song.

PERSON 2: You're a hater!!!
by BFG December 05, 2003
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Extremely overused and hackneyed catchphrase that people use when someone disapproves of something the user usually knows in their heart is shitty. Idiots like Kevin Federline, Paris Hilton, and their ilk go around doing their thing, and reasonable, working people who dispise them are labelled "haters" by the idiots (usually teenagers) who idolize them for no reason they could even name.
Me: Oh man, i cant believe kevin federline is on the VMAs

Someone: Come on man, dont be such a hater, you know you're just jealous.

Me: Die.
by Bloughhhurgh September 25, 2006
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not a word but is still used far too much and each time is increasingly annoying. Said to be jealousy, but could be someone who just points out the stupidity in what someone else is doing, successful or not.

side note to people who use this term, just cause someone doesnt like a certain artist or person it does not mean they are mad they are successful- it might just mean they dont like their music and or style or how they go about things.
me- "man lil wayne sucks dick"

hip hop fan- "o yous a hater"

me-"actually he is a very intelligent person who doesnt use his influence on today's youth as wisely as he could."

hip hop fan- "o yous a hater man"
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