clique 
(klĭk, klēk)
(klĭk, klēk)n.
A small exclusive group of friends or associates.
intr.v. cliqued, cliqu·ing, cliques
Informal
Informal
To form, associate in, or act as a clique.
[French, from Old French, latch or from obsolete French cliquer, to click, clink, of imitative origin.]
cliquey, cliquy, cliquish adj.
cliquish·ly adv.
cliquish·ness n.