undeclared
Britishadjective
Explanation
Anything undeclared isn't stated or admitted to in a public way. An undeclared political candidate may be seriously considering running for President, but she hasn't officially announced it. An undeclared war is conflict and violence that affects people's lives despite the fact that no government is officially calling it a war. If you're a college student with an undeclared major, you haven't decided which subject to focus on. Once you choose, you'll have a declared major. When it comes to paying taxes, any income that someone hides from the IRS is also undeclared: "She had to pay a fine because of those undeclared tips."
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Customs officials recently found 20 undeclared inflatable dinghies hidden between mattress pads at a Turkish-Bulgarian border crossing.
From BBC ● Aug. 18, 2026
Another U.S. citizen charged along with Lu, Chen Jinping, pleaded guilty in 2024 to acting as an undeclared foreign agent for his role in establishing the Chinatown police post.
From The Wall Street Journal ● May 6, 2026
Authorities will in the "near future" install scanning technology at border posts to detect undeclared rare earth minerals, Kambamura told parliament.
From Barron's ● Mar. 26, 2026
The six American service members who died in this undeclared war were “heroes,” Leavitt said.
From Salon ● Mar. 6, 2026
American soldiers were dying in an undeclared war with England.
From "George Washington, Spymaster" by Thomas B. Allen
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
