Source : Webster's Revised Unabridged Dictionary (1913)

Cliquish \Cli"quish\, a.
   Of or pertaining to a clique; disposed to from cliques;
   exclusive in spirit. -- {Cli"*quish*ness}, n.

Source : WordNet®

cliquish
     adj : befitting or characteristic of those who inclined to social
           exclusiveness and who rebuff the advances of people
           considered inferior [syn: {clannish}, {clubby}, {snobbish},
            {snobby}]