unannounced

/ ˌʌnəˈnaʊnst /

adjective

1. not made known publicly or declared in advance

   an unannounced visit

Example Sentences

Off the back of its concerns, the CQC carried out an unannounced inspection, with the findings to be published in due course.

From BBC

The Sybil Brand Commission’s 10 members serve a key oversight role, regularly conducting unannounced inspections of county jails and lockups.

From Los Angeles Times

It wasn’t even the first time he’d shown up at her home unannounced, according to an arrest affidavit and claims in a civil lawsuit.

From Los Angeles Times

Immigration raids now sweep through the Valley like dust storms — sudden, unannounced, merciless.

From Los Angeles Times

A huge part of the Blue Note aesthetic is making unique moments through unique collaborations or unannounced guests, like Stevie Wonder or John Mayer jumping onstage after sitting in the audience.

From Los Angeles Times

Related Words

• undisclosed 
• unheralded 
• unpublished