Meaning ofnonmainstreamin English

Adjective

1. unconventional; alternative (culture, ideas)
   The nonmainstream artist gained popularity for her unique style.
   Synonyms:

   alternativeunconventionalcounterculturalundergroundavant-gardebohemianunorthodox
   Antonyms:

   mainstreamconventionaltraditionalestablishedorthodox