Source : Webster's Revised Unabridged Dictionary (1913)

Easiness \Eas"i*ness\, n.
   1. The state or condition of being easy; freedom from
      distress; rest.

   2. Freedom from difficulty; ease; as the easiness of a task.

   3. Freedom from emotion; compliance; disposition to yield
      without opposition; unconcernedness.

            Give to him, and he shall but laugh at your
            easiness.                             --South.

   4. Freedom from effort, constraint, or formality; -- said of
      style, manner, etc.

            With painful care, but seeming easiness.
                                                  --Roscommon.

   5. Freedom from jolting, jerking, or straining.

Source : WordNet®

easiness
     n 1: a state of refreshing tranquility [syn: {relaxation}]
     2: freedom from difficulty or hardship or effort; "he rose
        through the ranks with apparent ease"; "they put it into
        containers for ease of transportation" [syn: {ease}, {simplicity}]
        [ant: {difficulty}]