Synonyms

unbounded

American

[uhn-baun-did] / ʌnˈbaʊn dɪd /

adjective

having no limits, borders, or bounds.

Synonyms:

immeasurable, infinite, vast, immense, limitless
unrestrained; uncontrolled.

unbounded enthusiasm.

Synonyms:

immoderate, unconfined

unbounded British

/ ʌnˈbaʊndɪd /

adjective

having no boundaries or limits

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of unbounded

First recorded in 1590–1600; un- ¹ + bound ³ + -ed ³

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

unbounded

He said Valentino had "widened the boundaries of what is possible, crossing the world with a rare sensibility, a silent rigour and an unbounded love of beauty".

From Barron's ● Jan. 19, 2026

Mr. Nicolson may not have paid much attention to birds in the past, but he is a hands-on learner with unbounded curiosity.

From The Wall Street Journal ● Dec. 5, 2025

I started my search in earnest, unbounded by faith, within a small radius that grew bigger along the way.

From Los Angeles Times ● Aug. 22, 2025

The court has previously upheld limited emergency entries, but always with clearly defined exigencies, not the unbounded, unverifiable standard Montana now asks it to adopt.

From Slate ● Jul. 3, 2025

In discussing the large-scale structure of the Cosmos, astronomers are fond of saying that space is curved, or that there is no center to the Cosmos, or that the universe is finite but unbounded.

From "Cosmos" by Carl Sagan

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023