The old Bohemian definition was “a vagabond, a wayfarer”. Possibly that definition may, to a certain extent, be true of the present-day Bohemian, for he is a mental vagabond and mental wayfarer. The word comes from the French “Bon Homme” for surely the Bohemian is a good man.
In first place, the Bohemian is always a man with hobby. He may have more than one, but one must have, and that not a mare theoretic and speculative, but substantial, material, money-costing hobby.
Secondly, Bohemian is generous; free of his money when he has any, and sometimes when he has not.
Thirdly, the Bohemian has general inaptitude for business.
Various Bohemian definitions
Bohemianism is the protest of naturalism against the too rigid, and, of-times, absurd restrictions established by Society.
Bohemina definition by: Bohemian San Francisco By Clarence E. Edwords
A bohemian is a person, as an artist or writer, who lives and acts free of regard for conventional rules and practices.
Bohemian definition by: World English Dictionary
The term ‘Bohemian’ has come to be very commonly accepted in our day as the description of a certain kind of literary gipsey, no matter in what language he speaks, or what city he inhabits …. A Bohemian is simply an artist or littérateur who, consciously or unconsciously, secedes from conventionality in life and in art.
Bohemian definition by: “Westminster Review,” 1862; Online Etymology Dictionary, © 2010 Douglas Harper
A descriptive term for a stereotypical way of life for artists and intellectuals. According to the stereotype, bohemians live in material poverty because they prefer their art or their learning to lesser goods; they are also unconventional in habits and dress, and sometimes in morals.
Bohemian definition by: The American Heritage® New Dictionary of Cultural Literacy