unannounced

adjective

un·​an·​nounced ˌən-ə-ˈnau̇n(t)st 

: occurring without any prior announcement or warning : not announced

an unannounced concert

showed up unannounced at her doorstep

Examples of unannounced in a Sentence

Recent Examples on the Web

Trump briefly stopped by its gift shop during an unannounced visit to the People's House in August 2025. — Arkansas Online, 5 Oct. 2026

Prior to the Atlanta concert Saturday, it was revealed Sheeran would take the stage closer to his usual set time as a then-unannounced artist had filled the opening act slot. — Daniel Kreps, Rolling Stone, 4 Oct. 2026

This is where DeBenedictis’s as-yet-unannounced four other microbes come in. — Brian Gallagher, Scientific American, 2 Oct. 2026

Also, although the drills were unannounced, some facilities may have had a heads-up, which could have boosted their results. — Beth Mole, ArsTechnica, 2 Oct. 2026

Word History

First Known Use

circa 1775, in the meaning defined above

Rhymes for unannounced

• announced
• denounced
• pronounced
• renounced
• bounced
• flounced
• pounced