Source : Webster's Revised Unabridged Dictionary (1913)

Sameness \Same"ness\, n.
   1. The state of being the same; identity; absence of
      difference; near resemblance; correspondence; similarity;
      as, a sameness of person, of manner, of sound, of
      appearance, and the like. ``A sameness of the terms.''
      --Bp. Horsley.

   2. Hence, want of variety; tedious monotony.

   Syn: Identity; identicalness; oneness.

Source : WordNet®

sameness
     n 1: the quality of being alike; "sameness of purpose kept them
          together" [ant: {difference}]
     2: the quality of wearisome constancy and lack of variety; "he
        had never grown accustomed to the monotony of his work";
        "he hated the sameness of the food the college served"
        [syn: {monotony}]