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

Derived Forms

• ˈboundlessly, adverb
• ˈboundlessness, noun

Other Words From

• boundless·ly adverb
• boundless·ness noun

Word History and Origins

Origin of boundless¹

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

Example Sentences

Wood’s boundless upside could be the splash of ice-cold water Houston’s norm-bending core needs.

From FiveThirtyEight

He met a few times a week with Jeremy Lee Stone, an ASL coach who says he remembers the day Ahmed suddenly shut his textbook, overcome with emotion by the language’s boundless capacity for expression.

From Washington Post

The ability to be creative leads to boundless ideas, but it’s often the result of in-person interaction.

From Ozy

A woman of boundless energy — no, really, she led the World Bank’s energy investments — Beschloss stopped by The Carlos Watson Show to discuss her life in business and the economic impact of the coronavirus on different countries.

From Ozy

That boundless energy often isn’t a good fit for pet owners, Fratt says.

From Science News For Students

For once, the boundless nature of comic story-telling is actually being used to cross boundaries.

From The Daily Beast

Is it exhaustion, something intensely painful in itself to someone who always felt boundless energy?

From The Daily Beast

Operating systems with sophisticated voices, talking computers, robots, androids—the future in those realms is boundless.

From The Daily Beast

On the other side, there are scores of Republicans whose boundless enthusiasm for war has waned considerably.

From The Daily Beast

David Frost was a man of boundless energy, fierce loyalty, disarming charm, and keen intelligence.

From The Daily Beast

Behind those eyes lay a brain of extraordinary activity, which was controlled by a boundless ambition.

From Project Gutenberg

She thus continued to dwell in the boundless regions of the intellect and the affections.

From Project Gutenberg

The expanse, apparently so limitless, open to her view, invited her fancy to a range equally boundless.

From Project Gutenberg

Nature has endowed you with a healthy body, ardent desires, boundless ambitions—well, satisfy them all.

From Project Gutenberg

He was impatient of control, he lacked patience, and although he had boundless energies, he never found a true outlet for them.

From Project Gutenberg

Related Words

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