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English definition of “unannounced”

unannounced

adjective, adverb     /ˌʌnəˈnaʊnst/
without telling anyone first: an unannounced visit her unannounced arrival Not expected or plannedAnnouncing, informing and stating
(Definition of unannounced adjectiveadverb from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “unannounced” in other dictionaries

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