Source : Webster's Revised Unabridged Dictionary (1913)

Selfishness \Self"ish*ness\, n.
   The quality or state of being selfish; exclusive regard to
   one's own interest or happiness; that supreme self-love or
   self-preference which leads a person to direct his purposes
   to the advancement of his own interest, power, or happiness,
   without regarding those of others.

         Selfishness,- a vice utterly at variance with the
         happiness of him who harbors it, and, as such,
         condemned by self-love.                  --Sir J.
                                                  Mackintosh.

   Syn: See {Self-love}.

Source : WordNet®

selfishness
     n : stinginess resulting from a concern for your own welfare and
         a disregard of others [ant: {unselfishness}]