Source : Webster's Revised Unabridged Dictionary (1913)

Needless \Nee"dless\, a.
   1. Having no need. [Obs.]

            Weeping into the needless stream.     --Shak.

   2. Not wanted; unnecessary; not requiste; as, needless labor;
      needless expenses.

   3. Without sufficient cause; groundless; cuseless. ``Needless
      jealousy.'' --Shak. -- {Need"less*ly}, adv. --
      {Need"less*ness}, n.

Source : WordNet®

needless
     adj : unnecessary and unwarranted; "a strikers' tent camp...was
           burned with needless loss of life" [syn: {gratuitous},
           {uncalled-for}]