clubby

Short definition from Wiktionary

Adjective

1. 1
   Resembling or suggestive of a social club or clubhouse: Congenial; welcoming people as guests.
2. 2
   Resembling or suggestive of a social club or clubhouse: Exclusive and cliquey.
3. 3
   Resembling or suggestive of a social club or clubhouse: Resembling or characteristic of the dance music played at nightclubs.
4. 4
   Fond of frequenting nightclubs.