English edit

Etymology edit

insider +‎ -ness

Noun edit

insiderness (uncountable)

  1. The quality of being an insider.
    • 2009 May 24, William Safire, “Abbreve That Template”, in New York Times[1]:
      The clipping of words is a harmless habit, used less for speed in spoken communication than for its sense of novelty or insiderness.