Someone or something that goes against the mainstream and classification. An alternative person cannot be grouped as emo, punk, goth, prep, hippie, nerd, or any other stereotypical group.
Also refers to music. Alternative music is not part of any other genre. Therefore, it cannot be called grunge, punk, metal, pop , etc. Most alternative bands are indie.
Alternative band include: The Killers, Kaiser Chiefs, Bloc Party, Snow Patrol, the Postal Service, Rage Against the Machine.
Antonyms: Green Day, the Spice Girls, Killswitch Engage, etc.