D defs.my
Entry 2 senses Webster, 1913

clannishness

· clan·nish·ness · IPA
01 n. a tendency to associate with only a select group.
  1. 1.
    a tendency to associate with only a select group.
  2. 2.
    a tendency to associate with only one's own clan; the propensity to display the sentiments, habits, and prejudices of one's own clan.