undeclared

adjective

un·​de·​clared ˌən-di-ˈklerd How to pronounce undeclared (audio)
: 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.
The recall was issued because of a labeling error, as certain bottles may contain undeclared allergens, including peanut, sesame, soy and wheat, the company said. Melina Khan, USA Today, 3 May 2025 Products were pulled from shelves over undeclared allergens and foreign material contamination. Jenna Anderson, Health, 2 May 2025 Presidents fought an undeclared war against Afghanistan for two decades costing $2.3 trillion on a fool’s errand concluding in a defeat by the Taliban. Bruce Fein, Baltimore Sun, 1 May 2025 All about us rage undeclared wars—military and economic. Tom Rogers, MSNBC Newsweek, 29 Apr. 2025 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 20 May. 2025.

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