The Collaborative International Dictionary of English v.0.48:

Foreignness \For"eign*ness\, n.
   The quality of being foreign; remoteness; want of relation or
   appropriateness.
   [1913 Webster]

         Let not the foreignness of the subject hinder you from
         endeavoring to set me right.             --Locke.
   [1913 Webster]

         A foreignness of complexion.             --G. Eliot.
   [1913 Webster]

WordNet (r) 3.0 (2006):

foreignness
    n 1: the quality of being alien or not native; "the strangeness
         of a foreigner" [syn: foreignness, strangeness,
         curiousness] [ant: nativeness]