cliquey
adjective disapproving uk/ˈkliː.ki/ us/ˈkliː.ki/ cliquier | cliquiest (also cliquish, /ˈkliː.kɪʃ/ /ˈkliː.kɪʃ/)
小集团的，排外的
behaving like a clique, not making other people feel welcome
I decided not to join the tennis club because I found it very cliquey. 我决定不加入那家网球俱乐部，因为我发现那里非常排外。