un·an·nounced 
(ŭn′ə-nounst)
(ŭn′ə-nounst)adj.
1. Not having been announced: an unannounced change of policy.
2. Being without advance notice; unexpected: an unannounced visit by a relative.
- prothrombin
- protist
- protistan
- protistology
- protium
- proto-
- Proto-Algonquian
- protoceratops
- protocol
- protocolar
- protocolary
- protoctist
- protoderm
- protodermal
- protogalaxy
- Proto-Germanic
- protogynous
- protogyny
- protohistorian
- protohistoric
- protohistory
- protohuman
- Proto-Indo-European
- protolanguage
- protolithic