as in vague
not seen or understood clearly
plagued by undefined worries that kept her awake at night
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Recent Examples of undefined
Leave ownership undefined, and the moon will become a playground for politicians and their cronies.
—
Antony Davies, Boston Herald, 19 Apr. 2026
Transit conditions, toll arrangements and the legal framework for passage remain undefined, deterring ship owners from passing through the waterway, according to maritime research firm Windward.
—Anniek Bao,joseph Wilkins, CNBC, 9 Apr. 2026
Meghan had been presented with several tiara options and preferred an emerald tiara, but the undefined provenance of its jewels meant it was not deemed a suitable choice.
—Katie Nicholl, Vanity Fair, 30 Mar. 2026
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
See All Example Sentences for undefined
Antony Davies, Boston Herald, 19 Apr. 2026
Transit conditions, toll arrangements and the legal framework for passage remain undefined, deterring ship owners from passing through the waterway, according to maritime research firm Windward.
—Anniek Bao,joseph Wilkins, CNBC, 9 Apr. 2026
Meghan had been presented with several tiara options and preferred an emerald tiara, but the undefined provenance of its jewels meant it was not deemed a suitable choice.
—Katie Nicholl, Vanity Fair, 30 Mar. 2026
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
See All Example Sentences for undefined
Recent Examples of Synonyms for undefined
Adjective
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Perhaps clever legal strategies might find ways to meet the justices’ new standards, or perhaps experts might come up with new metrics to mathematically prove discrimination, even when intent is vague.—
Vann R. Newkirk II,
The Atlantic,
2 May 2026
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There’s a false perception in pop music that the best way to connect with the masses is to keep things broad — that vague generalizations are easier for people to latch onto.—
Larisha Paul,
Rolling Stone,
2 May 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 3 May. 2026.
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