/ ˌʌnɪkˈspektɪd; NAmE / adjective
if sth is unexpected , it surprises you because you were not expecting it :
an unexpected result
an unexpected visitor
The announcement was not entirely unexpected .
► the unexpected noun [ sing. ]:
Police officers must be prepared for the unexpected.
► un·ex·pec·ted·ly adverb :
They had arrived unexpectedly.
an unexpectedly large bill
The plane was unexpectedly delayed.
Not unexpectedly, most local business depends on tourism.
► un·ex·pect·ed·ness noun [ U ]
—compare expect , expected