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Synonyms

undetected

British  
/ ˌʌndɪˈtɛktɪd /

adjective

  1. not perceived, noticed, or discovered

    the fake bomb passed undetected

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.

The sight of so many Newcastle players jogging back as goalscorer Adrien Truffert drifted into the box undetected in the 85th minute summed up the listlessness that has gripped them.

From BBC • Apr. 25, 2026

That’s almost certainly an undercount, given the number of cases that go undetected or unreported, Lee said.

From Los Angeles Times • Apr. 22, 2026

A "dark" vessel -- usually a tanker or cargo carrier -- deliberately disables or manipulates transponders in a bid to go undetected by public tracking systems like Kpler's MarineTraffic.

From Barron's • Mar. 31, 2026

The new research suggests that location can play a major role in whether someone receives a timely diagnosis and proper treatment or whether their condition goes undetected.

From Science Daily • Mar. 9, 2026

In every direction, I saw sprawling, dense forests and I dwelt not on the greenery but the fact that there were many places a guerrilla army could live and train undetected.

From "Long Walk to Freedom" by Nelson Mandela