boundless

[bound-lis]

adjective

1. having no bounds; bound; infinite or vast; unlimited.

   His boundless energy amazed his friends.

   Synonyms: illimitable, inexhaustible, unbounded, endless, limitless

boundless

/ ˈbaʊndlɪs /

adjective

1. unlimited; vast

   boundless energy

Other Word Forms

• boundlessly adverb
• boundlessness noun

Word History and Origins

Origin of boundless¹

First recorded in 1585–95; bound ³ + -less

Example Sentences

She has a preternatural belief in her own instincts and a boundless curiosity that, taken together, help explain the extraordinarily rich life and oeuvre she’s constructed.

Read more on Los Angeles Times

And Herbert George gives us “The Elements of Sculpture,” as if the variety of a boundless medium could be organized into a Strunk-and-White list of guidelines.

Read more on The Wall Street Journal

Immediately I was in a world of possibilities, flooded with boundless energy and no fears.

Read more on Salon

His reputation made him out to be the natural talent, who played with irrepressible joy and boundless creativity, but sometimes fell victim to lapses in concentration.

Read more on The Wall Street Journal

Between boundless cheers and intermittent boos, historic milestones and horrifying heartbreaks, triumphant summers and torturous falls.

Read more on Los Angeles Times

Related Words

• immeasurable 
• immense 
• incalculable 
• inexhaustible 
• infinite 
• limitless 
• tremendous 
• unending 
• unlimited 
• untold 
• vast