undeclared

adjective

un·​de·​clared ˌən-di-ˈklerd 

: 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

Multiple batches of chocolate nonpareils produced by Weaver Nut Company, Inc. and sold across the U.S. have been recalled due to potential undeclared milk allergens, the Food and Drug Administration announced earlier this week. —Kierra Frazier, CBS News, 21 June 2025

Products were pulled from shelves over bacteria and fungus contamination, as well as mislabeling and undeclared allergens. —Jenna Anderson, Health, 13 June 2025

Petrova was detained by customs agents at Logan International Airport in Boston in February for allegedly trying to bring undeclared frog embryos into the U.S. as part of her research. —Nadine El-Bawab, ABC News, 12 June 2025

Authorities have released a mugshot of the Chinese national accused of smuggling undeclared biological material into the United States. —Julia Bonavita, FOXNews.com, 11 June 2025

Word History

First Known Use

1526, in the meaning defined above

Rhymes for undeclared

• aired
• bared
• blared
• caird
• cared
• chaired
• dared
• erred
• fared
• flared
• glared
• haired