beatnik

[ beet-nik ]

/ ˈbit nɪk /

(sometimes initial capital letter) a member of the Beat Generation.

a person who rejects or avoids conventional behavior, dress, etc.

Origin of beatnik

1955–60, Americanism; beat (adj.) (as in Beat Generation) + -nik

Guggenheim pulled the confirmed bachelor into her coven of beatnik friends.

Casa de la Torre: The Museum of Mexico’s Liberace |Brandon Presser |March 24, 2014 |DAILY BEAST
At an underground party, Joyce introduced Peggy to her friend Abe Drexler (Charlie Hofheimer), a beatnik journalist.

‘Mad Men’ Premiere: Before Season 5, Let's Remember Season 4 |Jace Lacob |March 22, 2012 |DAILY BEAST
That was the only place in town, as I understood, from the reports, outside of the beatnik place they could.

Warren Commission (5 of 26): Hearings Vol. V (of 15) |The President's Commission on the Assassination of President Kennedy
He was far, far different than the laughing, beatnik jabbering, youngster he had always seemed.

Black Man's Burden |Dallas McCord Reynolds

beatnik

/ (ˈbiːtnɪk) /

a member of the Beat Generation (sense 1)

informal any person with long hair and shabby clothes

C20: from beat (n) + -nik, by analogy with Sputnik