clubby

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++club·by /ˈklʌbi/ adjective informal  a clubby place is where everyone is very friendly to each other, but people who are outside their group are not very welcome 〔某个地方在社交上〕排外的，只对圈内人友好的 the clubby atmosphere of the media 媒体的排外氛围

Examples from the Corpus

clubby• The result is a clubby feel.• The Pueblo peoples were a chubby and clubby lot.• In other words, many of the snobby, clubby vibes that tend to waft around conventional classical music are absent.

club·by adjectiveChineseSyllable  

each is is clubby everyone Corpus friendly very where to place a

clubby
club‧by /ˈklʌbi/ adjective informal
a clubby place is where everyone is very friendly to each other, but people who are outside their group are not very welcome:
    the clubby atmosphere of the media