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. [1913 Webster] Syn: Unlimited; unconfined; immeasurable; illimitable; infinite. [1913 Webster] -- {Bound"less*ly}, adv. -- {Bound"less*ness}, n. [1913 Webster]