nud•ist |ˈn(y)oōdist| |ˌn(j)udəst| |ˌnjuːdɪst| noun a person who engages in the practice of going naked wherever possible : a mission to encourage more public places to allow nudists | [as adj. ] a nudist beach. DERIVATIVES nud•ism |-ˌdizəm| |ˌn(j)uˈdɪzəm| noun