unannounced

/ ˌʌnəˈnaʊnst /

adjective

1. not made known publicly or declared in advance

   an unannounced visit

Example Sentences

One Monday in mid-October, after a year in US immigration detention, officers arrived unannounced at Majid's cell in Texas.

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“Ventura County was one of the counties where unannounced audits occurred, and those findings reinforced the need for stronger compliance,” Nasarenko said.

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One of the main reasons viewers tune in is to see trailers for upcoming and unannounced games.

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Like all armed states, Russia regularly tests its delivery systems, but has rejected the accusation it has carried out unannounced weapons tests.

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When she makes an unannounced visit to see him in Japan, the title’s gentle irony becomes apparent.

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Related Words

• undisclosed 
• unheralded 
• unpublished