non-mainstream
the opposite of mainstream. usually not the 'trend' and usually not what everybody else is doing. original and individual. can usually be identified as something original and/or something that will probably never become popular, but awesome nevertheless.
Synonyms for non-mainstream
On this page, you will find 30 slang terms related to non-mainstream. Some of the top words include: sp00k, everybody else, badness, pop, Stiffler, and 25 more.