Definition of "unannounced" []

• Not announced (adjective)

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• "Mahmoud Ahmadinejad contrasted his trip with what he called the unannounced stealth visits of other VIPs, namely U.S. officials."
• "But the central DNA of television situation comedy is all here: the neighbor who bursts in unannounced, the schemes that don't work, the husband who thinks he knows best but often doesn't."
• "An April 2005 memo prohibited certain unannounced inspections."