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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.

"Undetected smear campaigns have always been a thing," he points out.

From BBC • Mar. 10, 2025

Undetected asymptomatic infections could inadvertently influence research results.

From Science Daily • Jan. 4, 2024

Undetected transmission A major technique used by epidemiologists to slow spread and curb Ebola outbreaks is contact tracing.

From Scientific American • Feb. 24, 2015

Undetected by astronomers, the rock came out of the glare of the sun and hit the atmosphere at 43,000 miles per hour.

From Washington Post • Nov. 6, 2013

Undetected by him, the girl swiftly passed a furtive handkerchief across her lips.

From The Brass Bowl by Vance, Louis Joseph

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.