undefined
adjective
un·de·fined
ˌən-di-ˈfīnd 
: not defined: such as
a
: not clearly or precisely shown, described, or limited
undefined rules
undefined powers
a vague, undefined feeling of dread
… the true outlines of Clinton's foreign policy remain undefined.—
William Greider
William Greider
b
: not provided with a definition
an undefined dictionary entry
Examples of undefined in a Sentence
plagued by undefined worries that kept her awake at night
Recent Examples on the Web
Sid Vangala, senior AI systems engineer and architect at MasTec, said the industry is entering an era where responsibility boundaries are completely undefined.
—Arthur Zaczkiewicz, Footwear News, 20 Apr. 2026
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
See All Example Sentences for undefined
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Arthur Zaczkiewicz, Footwear News, 20 Apr. 2026
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
See All Example Sentences for undefined
Cite this Entry
“Undefined.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undefined. Accessed 29 Apr. 2026.
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