This word lives a double life. On the one hand, it can describe something that is legitimately popular because it is good. However, through the hipster douche movement, the phrase "this ___ is mainstream" is used almost as often as "I love PBR" and "I need some more baby powder and Crisco to fit in my jeans."

According to many hipsters (or at least the obnoxiously arrogant ones), any musical artist that is signed to a label, sells music online or attracts more than a dozen people to his/her show is "mainstream," a "sellout," or any other word they found in their thesaurus they bought with their parents money.
One definition: "The band broke into the rock mainstream with its smash hit (insert song here)."

The newer definition: "Screw (insert band name here), that band is so mainstream. Come on, guys. Let's all dress in an identical manner and listen to music Pitchfork tells us is cool."
by DestroyAllHumans May 9, 2010
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Something that is liked by a majority of people and doesn't pertain to any particular subculture. Mainstream is not a particular style of music, it has nothing to with rap, it has nothing to do with the media forcing various types of music down our throats. It's just stuff that a lot of people like. That's it.
And as for the people saying shit like "Mainstream should die"... What do you think would happen if everyone started listening to the more underground music that you like?

It would be mainstream. Faggot.
by Zer0T September 7, 2011
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A person that goes with the crowd, and is in no way alternative at all.
'Look at Jess Turner, she is well mainstream'
by Jtaylor16 October 29, 2009
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A bullshit thing that tells you what's in and what's out. I dont see how people actually listen and go along to the mainstream. If they to go along with said mainstream, they're probably brainwashed. Most Mainstreamed stuff is shown on MTV
Mainstream Follower: LEiK OHMiG0D. ShE iS LEiK WeARiNG THaT uGLY SHiRT! &+ iTS LEiK, NoT WHaT MTV SAiD iS CoOL.

Smart Person: -Resisting to kill the mainstream follower-
by IT WASNT ME! July 11, 2008
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A way for hipsters to describe modern music/ trends. Most commonly used my people who think that the media is ruining life.
Hipster- "I liked life before it went mainstream".
by magicalllama June 21, 2012
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Something that's popular. Sure, it's trendy, sure, it's probably on MTV and popular among people-but, honestly-is it really that much of an issue if I have Lady Gaga on my Ipod? She's in there with Amanda Palmer and Porcelain and the Trams as well-am I indie enough for you?

The lot of you are being really rude. Some mainstream is good, it's not the end of the world, so stop complaining that somebody else likes Rihanna and you like The Decemberists.

Grow up.
Person A: Hey, have you heard the new release from Lady Gaga? It's pretty good. I think I"ll give her a chance!

Person B: Umm..that stuff is forced down our throats by mtv and stuff. You shouldn't listen to that. Here, I got a new album based off of a Pitchfork review, you should try it.

Person A: *listens*
Yeah...no offense dude, but I don't like it.

Person B: *scoffs* You're just another one of the sheeple. A slave to the mainstream. You just have bad taste.
by Polygame January 1, 2011
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