One who practices an unconventional style of living -

Bohemian (noun):
English Meaning - A person who is interested in artistic and unusual things, for example, art, music, or literature, and lives in an informal way that ignores the usually accepted ways of behaving. 
Bangla Meaning - যাযাবর; ভবঘুরে; বেদে।
Example - Some writers are believed to be bohemians.

Other options, 
Philistine (সংস্কৃতিবর্জিত অসভ্য মানুষ) - One who does not care for literature or art. 
Iconoclast (কালাপাহাড়ী) - One who destroys images or attacks popular beliefs. 
Celibate (কুমার) - One who does not marry, especially as a religious obligation.

Source: Cambridge Dictionary.