Re*sist"less*ness

from The Collaborative International Dictionary of English v.0.48

Resistless \Re*sist"less\, a.
   1. Having no power to resist; making no opposition. [Obs. or
      R.] --Spenser.
      [1913 Webster]

   2. Incapable of being resisted; irresistible.
      [1913 Webster]

            Masters' commands come with a power resistless
            To such as owe them absolute subjection. --Milton.
      [1913 Webster] -- {Re*sist"less*ly}, adv. --
      {Re*sist"less*ness}, n.
      [1913 Webster]