unbounded

American  

[uhn-boun-did] / ʌnˈbaʊn dɪd /

adjective

1. having no limits, borders, or bounds.

   Synonyms:

   immeasurable, infinite, vast, immense, limitless

2. unrestrained; uncontrolled.

   unbounded enthusiasm.

   Synonyms:

   immoderate, unconfined

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unbounded British  

/ ʌnˈbaʊndɪd /

adjective

1. having no boundaries or limits

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Other Word Forms

• unboundedly adverb
• unboundedness noun

Etymology

Origin of unbounded

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

Example Sentences

“Not an unbounded and unlimited entity with high degrees of autonomy – but AI that is carefully calibrated, contextualized, within limits.”

From Barron's • Apr. 4, 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

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 My First Coup d'Etat, Mahama Jr describes himself as "an observant child with an active imagination and an unbounded curiosity".

From BBC • Nov. 19, 2024

On the other hand, the rhythmless is unlimited, and the speech should be circumscribed but not by meter; for what is unbounded is unpleasant and unrecognizable.

From "Words Like Loaded Pistols" by Sam Leith