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
In most cases, their roles are undefined, though a number are clearly there to deliver on Kennedy’s efforts to rewrite vaccination policy in ways that downplay the importance of and sow distrust in these key public health tools.
—
Helen Branswell, STAT, 30 Mar. 2026
Rich Table’s palate is expansive, if intentionally undefined, with dishes that riff on French, Italian, Korean, Japanese and Chinese cooking.
—Cesar Hernandez, San Francisco Chronicle, 27 Mar. 2026
The White House is attempting to manage a large-scale military confrontation with an undefined exit strategy—a confrontation that is unnerving markets.
—Vivian Salama, The Atlantic, 24 Mar. 2026
From the feathery, full brows to lips that look a little lived in, with smudgy, undefined edges, Park’s calling card has become her face card.
—Morgan Fargo, Vogue, 16 Mar. 2026
See All Example Sentences for undefined
Helen Branswell, STAT, 30 Mar. 2026
Rich Table’s palate is expansive, if intentionally undefined, with dishes that riff on French, Italian, Korean, Japanese and Chinese cooking.
—Cesar Hernandez, San Francisco Chronicle, 27 Mar. 2026
The White House is attempting to manage a large-scale military confrontation with an undefined exit strategy—a confrontation that is unnerving markets.
—Vivian Salama, The Atlantic, 24 Mar. 2026
From the feathery, full brows to lips that look a little lived in, with smudgy, undefined edges, Park’s calling card has become her face card.
—Morgan Fargo, Vogue, 16 Mar. 2026
See All Example Sentences for undefined
Recent Examples of Synonyms for undefined
Adjective
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The exact reasons are often left vague, and the successors to be determined, but people are leaving.—
Benjamin Wallace-Wells,
New Yorker,
26 Apr. 2026
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The exact reason remains vague, but some widespread cultural practice occurred across Central Europe.—
Maria Mocerino,
Interesting Engineering,
25 Apr. 2026
Adjective
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The book portrays the city as a liminal metropolis where the line demarcating business and crime has been worn faint by heavy footfall from both directions.—
Mark O’Connell,
The New York Review of Books,
25 Apr. 2026
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That's a whopping 500-meter--wide (1,640-foot) dish, ideal for picking up faint signals from far away.—
Paul Sutter,
Space.com,
25 Apr. 2026
Cite this Entry
“Undefined.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefined. Accessed 2 May. 2026.
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