as in vague
not seen or understood clearly
plagued by undefined worries that kept her awake at night
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Example Sentences
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Recent Examples of undefined
Those terms are undefined and subjective.
—
Tim Regan-Porter, Denver Post, 2 Mar. 2026
But that’s different from what the government has said in the past and is still undefined, Hemani’s lawyers say.
—Maureen Groppe, USA Today, 1 Mar. 2026
And yet the core of any successful military operation remains unclear and undefined — what is the objective?
—Fareed Zakaria, Washington Post, 27 Feb. 2026
There was a joy in not knowing what came next, in stepping into something undefined.
—Alisa Bittner, Refinery29, 12 Feb. 2026
See All Example Sentences for undefined
Tim Regan-Porter, Denver Post, 2 Mar. 2026
But that’s different from what the government has said in the past and is still undefined, Hemani’s lawyers say.
—Maureen Groppe, USA Today, 1 Mar. 2026
And yet the core of any successful military operation remains unclear and undefined — what is the objective?
—Fareed Zakaria, Washington Post, 27 Feb. 2026
There was a joy in not knowing what came next, in stepping into something undefined.
—Alisa Bittner, Refinery29, 12 Feb. 2026
See All Example Sentences for undefined
Recent Examples of Synonyms for undefined
Adjective
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The title Something Very Bad Is Going to Happen is pretty vague, and the new trailer doesn’t clear much up.—
Bethy Squires,
Vulture,
14 Mar. 2026
-
This implies regime change, yet the administration’s ambitions have in fact been vague and inconsistent.—
Dennis Ross,
The Atlantic,
13 Mar. 2026
Adjective
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Grab your telescope and look out for a line of faint stars extending diagonally from Gienag above Algorab, which will lead you directly to the patch of sky containing M104!—
Anthony Wood,
Space.com,
14 Mar. 2026
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Normally, such events are invisible to telescopes, producing only faint ripples in spacetime.—
Rupendra Brahambhatt,
Interesting Engineering,
14 Mar. 2026
Cite this Entry
“Undefined.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefined. Accessed 20 Mar. 2026.
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