Wiktionary
clubbiness
n. The state or quality of being clubby, of resembling a small, selective group
Usage examples of "clubbiness".
They had the stifling clubbiness of exiles who have all known each other too long.
Suddenly it made sense to me-the clubbiness, the lade-da neighbors, all this rampant elitism.
Vonnegut's faithful readers have a sense of clubbiness that is intensified by the private language of the books.