Top Definition
Someone who is anti - mainstream has a strong dislike of trendy things and people. Many subcultures have preached about being anti - mainstream, most notably punk and heavy metal. Death metal, Black metal, and a few lesser known subgenres of punk rock remain the longest standing anti - mainstream subcultures while others have either become popular (I.e punk) or merged into other more popular subcultures(I.e classic metal and thrash metal). While music subcultures have the biggest anti - mainstream message other subcultures based around religion (I.e LaVeyan Satanism), politics(i.e non partisans), and even literature have emerged. Most trendy things start out anti - mainstream and become popular usually after a slight change in image (I.e in the 1920's united states when white people began playing jazz it became acceptable).
Punk was the first major anti - mainstream subculture, shortly followed by heavy metal and hip - hop.
by Thatheadbanger July 25, 2009
There are people out there who have a dislike for mainstream. Some hate it, some can tolerate it but not really prefer it. Many people ask why some people hate mainstream. Some reasons are that some people what to be different. But, in other cases it's just that mainstream things get boring. You hear some songs play on the radio on repeat and you get tired of it. Everyone listens to it, everyone knows the words, so it just becomes..well..un-original. Some people like things that aren't popular because they feel more freshened out. For example, when you are a fan of a widely known celebrity, you have many people screaming that they're that persons number one fans. You have the haters and all the mix up you see on the media. When it comes to lesser known artists, their music is more heard, you know what i mean? You won't usually see their fans fighting and etc because the fans are really alla bout the music. Okay it's really hard to explain, but i'll try to wrap it up in a few sentences. Mainstream can get boring, used and un-original. Some people do't mind that, but others rather a more unique view on things. When it comes to clothing most anti-mainstream shoppers would get their clothes from thrift shops, maybe even hot topic and lesser known stores instead of Urban Outfitters or Aeropostale. I hope this makes more sense.
Anti-Mainstream is when your not into/against mainstream or widely popular things. Like when you rather the band SmallPools over One Direction. And when you rather the movie Killing Daddy instead of Insidious.
by ima_treepotato September 13, 2015
when you won't listen to a perfectly good song just because everyone and their grandmother and their dog and mtv plays it.
jebediah "i was going to listen to kanye west but then i realised how gay he is."

sally "you're just anti main stream you ass pirate."
by ethanbockcallsmary May 14, 2010

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