'unannounced' definitions:
Definition of 'unannounced'
(from WordNet)
adjective
Without warning or announcement; "they arrived unannounced"; "a totally unheralded telegram that his daughter...died last night"- M.A.D.Howe [syn: unannounced, unheralded, unpredicted]
Synonyms of 'unannounced'
From: Moby Thesaurus
- extraordinary,
- improbable,
- more than expected,
- out-of-the-way,
- past expectation,
- sudden,
- unanticipated,
- undivined,
- unexpected,
- unforeseeable,
- unforeseen,
- unguessed,
- unheralded,
- unhoped for,
- unpredictable,
- unpredicted,
- unprepared for,
- without warning