Source : Webster's Revised Unabridged Dictionary (1913)

Boundless \Bound"less\, a.
   Without bounds or confines; illimitable; vast; unlimited.
   ``The boundless sky.'' --Bryant. ``The boundless ocean.''
   --Dryden. ``Boundless rapacity.'' ``Boundless prospect of
   gain.'' --Macaulay.

   Syn: Unlimited; unconfined; immeasurable; illimitable;
        infinite. -- {Bound"less*ly}, adv. -- {Bound"less*ness},
        n.

Source : WordNet®

boundless
     adj : seemingly boundless in amount, number, degree, or especially
           extent; "unbounded enthusiasm"; "children with
           boundless energy"; "a limitless supply of money" [syn:
           {unbounded}, {limitless}]