Source : Webster's Revised Unabridged Dictionary (1913)

Entireness \En*tire"ness\, n.
   1. The state or condition of being entire; completeness;
      fullness; totality; as, the entireness of an arch or a
      bridge.

            This same entireness or completeness. --Trench.

   2. Integrity; wholeness of heart; honesty. [R.]

            Entireness in preaching the gospel.   --Udall.

   3. Oneness; unity; -- applied to a condition of intimacy or
      close association. [Obs.]

            True Christian love may be separated from
            acquaintance, and acquaintance from entireness.
                                                  --Bp. Hall.

Entirety \En*tire"ty\, n.; pl. {Entireness}. [OF. entieret['e].
   Cf. {Integrity}.]
   1. The state of being entire; completeness; as, entirely of
      interest. --Blackstone.

   2. That which is entire; the whole. --Bacon.

Source : WordNet®

entireness
     n : the state of being total; "appalled by the totality of the
         destruction" [syn: {entirety}, {totality}]