Definition:
A "beatnik" is a noun that refers to a member of the Beat Generation, a group of writers, artists, and thinkers in the 1950s and 1960s who rejected traditional values and embraced new ideas about art, culture, and life. Beatniks often dressed in a unique way and had a nonconformist attitude, meaning they did not follow the usual rules of society.
In literature or art discussions, you might say: - "The novel's themes of rebellion and exploration of consciousness reflect the beatnik philosophy."