CLIQUISH
clannish, cliquish, clubby, snobbish, snobby
(adjective) befitting or characteristic of those who incline to social exclusiveness and who rebuff the advances of people considered inferior
Source: WordNet® 3.1
Etymology
Adjective
cliquish (comparative more cliquish, superlative most cliquish)
Of or pertaining to a clique.
Tending to associate with a small and exclusive group.
Source: Wiktionary
Cli"quish, a.
Definition: Of or pertaining to a clique; disposed to from cliques;
exclusive in spirit.
– Cli"*quish*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition