UNDETECTED Synonyms: 29 Similar and Opposite Words

undetected

adjective

Definition of undetected

as in undisclosed

Related Words

Relevance

Dissimilar Words

Example Sentences

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.

Recent Examples of undetected More is surely going on, undetected or unreported, even as there has been a minor online symphony of whistle-blowing, alarm-bell tolling, and pleas for legislative action. — Jill Lepore, New Yorker, 21 Sep. 2026 Scientists have discovered a crater on the moon that's bigger than the Roman Colosseum and is the result of a powerful impact two years ago that initially went undetected. — CBS News, 16 Sep. 2026 Threat patterns that would have otherwise gone undetected can be correlated. — Gaurav Kapoor, Forbes.com, 8 Sep. 2026 During the Hugging Face breach, OpenAI agents autonomously plotted a digital heist that went undetected for more than a week, intensifying concerns OpenAI is sacrificing safety to push the AI frontier. — Reuters, NBC news, 4 Sep. 2026 See All Example Sentences for undetected

Recent Examples of Synonyms for undetected

Adjective

One live bedbug and an undisclosed number of dead ones were found in room 3407 as inspectors revisited the third floor, where bedbug activity wasn’t found four days prior.

— Corey Schmidt, Sacbee.com, 3 Oct. 2026
Superhuman, the productivity company formerly known as Grammarly, agreed in June to acquire GPTZero for undisclosed terms.

— Nick Lichtenberg, Fortune, 2 Oct. 2026

Definition of undisclosed

Adjective

Because the combination of their trade for McCarthy, the mounting season-ending injuries to key players and a loss to Arizona could hurtle this season into concerning and unknown territory.

— Pat Leonard, New York Daily News, 4 Oct. 2026
He was transported to a local hospital; his condition is unknown.

— Jasmine Mendez Follow, Los Angeles Times, 4 Oct. 2026

Definition of unknown

Adjective

Daisy has an unrevealed agenda, though, and soon forces like none Gilead has faced before (other than in The Handmaid’s Tale) will change the place forever (or at least until the next sequel/spinoff).

— Daniel Fienberg, HollywoodReporter, 2 Apr. 2026
Because the two of you had met naked, there was nothing unrevealed, right?

— Addie Citchens, New Yorker, 8 Mar. 2026

Definition of unrevealed

Adjective

That means the early universe wasn't as pure and unspoiled as previously believed, potentially impacting our theories of cosmic evolution.

— Robert Lea, Space.com, 25 Sep. 2026
Miami remains the perennial grande dame, while further north, in the Palm Beaches, travelers encounter charming vias tucked behind Worth Avenue and unspoiled wildlife havens.

— Condé Nast, Condé Nast Traveler, 23 Sep. 2026

Definition of unspoiled

Browse Nearby Words

undetectable

undetected

undetermined

See all Nearby Words

Cite this Entry

Style

“Undetected.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undetected. Accessed 9 Oct. 2026.

Copy Citation

Synonyms of undetected

adjective

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

inscrutable

Popular in Grammar & Usage

Do You Need a New Language Peeve?

The Exceptions of '-s' and '-es' Plurals

Merriam-Webster’s Great Big List of Words You Love to Hate

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Popular in Wordplay

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

The Words of the Week - Oct. 9

Even More Bird Names that Sound Like Insults (and Sometimes Are)

Popular

Do You Need a New Language Peeve?

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

Games & Quizzes