nudist
n.a person who chooses to be naked in public, especially at special beaches or clubs. This word is often used to describe someone who enjoys being in the sun without clothes.
n.a person who practices nudism, typically in designated public areas such as beaches or resorts. Often carries a slightly dated or informal tone in modern usage.
“The nudist walked along the beach without any clothes.”
“The resort caters specifically to nudists, offering private cabanas and a strict policy of clothing-free relaxation.”
“While the nudist movement gained significant traction in the mid-twentieth century, modern social norms have largely confined such practices to specific, legally protected enclaves.”
“When they have a chance, they hide in the dunes and study adult bodies at the nudist beach with fascination/repulsion.”
From nude + -ist.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.