Longman Dictionary of Contemporary English
Wiktionary
n. 1 Any lifestyle generally perceived to be outside the norm of its culture. 2 (context euphemistic English) Homosexuality, or other LGBT identity or behavior.
Wikipedia
An alternative lifestyle is a lifestyle diverse in respect to mainstream ones, or generally perceived to be outside the cultural norm. Lifestyle is a media culture term derived from the concept of style in art. Usually, but not always, it implies an affinity or identification within some matching subculture (examples include hippies, goths and punks). Some people with alternative lifestyles mix certain elements of various subcultures (e.g., grunge musicians were often influenced by a mixture of the punk, hippie, emo and heavy metal subcultures). Not all minority lifestyles are held to be "alternative"; the term tends to imply newer forms of lifestyle, often based upon enlarged freedoms (especially in the sphere of social styles) or a decision to substitute another approach or not enter the usual expected path in most societies.
Usage examples of "alternative lifestyle".
Pregnant former sex symbol and suspected embezzler celebrate their alternative lifestyle.
Most were afraid to have their alternative lifestyle come out at work, so they eventually talked to us.
For the first time he has considered dieting: it would never do for a herald of the alternative lifestyle to sport a paunch.
Sexcetera, Melody in Love, Pillow Previews, Alternative Lifestyle Features, 'nudity', 'strong language' and what are laughingly known as 'mature situations'.
He wondered if a few alternative lifestyle types would continue living at Aotearoa and found he didn't really care, he wouldn't be back here again.
Others saw in the Society a valiant and worthy attempt to explore aspects of an alternative lifestyle that, although alien, might be made to work for humans.
By the way he was looking around, Ghejo wouldn't mind an alternative lifestyle himself.
They genuinely seem to want an alternative lifestyle, to reject the world that gave them the War and the Crash.