boundless

adjective

bound·​less ˈbau̇n(d)-ləs 

: having no boundaries : vast

boundless possibilities

boundlessly adverb

boundlessness noun

Synonyms

• bottomless
• endless
• fathomless
• horizonless
• illimitable
• immeasurable
• immensurable
• indefinite
• infinite
• limitless
• measureless
• unbounded
• unfathomable
• unlimited

Examples of boundless in a Sentence

We were filled with boundless joy.

Her love for her family was boundless.

Recent Examples on the Web

And to be sure, Musk’s money affords him a boundless budget to buy just about anything and sue just about anyone, in perpetuity. —Allison Morrow, CNN Money, 13 June 2025

Fell in the boundless effervescence of the Strawberry Full Moon in Sagittarius. —Lisa Stardust, Refinery29, 9 June 2025

The open-plan common areas, designed to showcase the continent’s vast aesthetic and natural bounty, champion the distinctly African luxuries of seemingly boundless space and exuberant nature. —Alexandra Kirkman, Forbes.com, 9 June 2025

Speeches will soar on promises of boundless possibility in the terrain ahead. —Francine A. Lefrak, New York Daily News, 8 June 2025

Word History

First Known Use

1599, in the meaning defined above

Rhymes for boundless

• groundless
• soundless

Kids Definition

boundless

adjective

bound·​less ˈbau̇nd-ləs 

: having no boundaries or limits : vast

the boundless sky

boundlessly adverb

boundlessness noun