undeclared

adjective

un·​de·​clared ˌən-di-ˈklerd How to pronounce undeclared (audio)
Synonyms of undeclarednext
: not announced or openly acknowledged : not stated or decided in an official way : not declared
an undeclared war
an undeclared presidential candidate
a student with an undeclared major

Examples of undeclared in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Costco has recalled its caramel mini beignets after finding that some packages may include an undeclared allergen. Marley Malenfant, Austin American Statesman, 11 Feb. 2026 As regulatory scrutiny increases across fashion and luxury — particularly around material claims and greenwashing, undeclared textile blending and counterfeiting — brands face rising financial and reputational risks. Rhonda Richford, Footwear News, 4 Feb. 2026 The Khapra beetle, touted as the world's most invasive grain pest, was found in Detroit's Airport on April 18, 2025, when a traveler returning from Lebanon was sent to secondary inspection after undeclared seeds were discovered in their luggage. Jalen Williams, Freep.com, 14 Jan. 2026 Insurers are generally the ones who make the final determination as to whether something like an undeclared act of war or civil unrest has occurred, French said. Greg Iacurci, CNBC, 10 Jan. 2026 See All Example Sentences for undeclared

Word History

First Known Use

1526, in the meaning defined above

Time Traveler
The first known use of undeclared was in 1526

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Cite this Entry

“Undeclared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undeclared. Accessed 18 Feb. 2026.

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