if something is unexpected, it surprises you because you were not expecting it an unexpected result an unexpected visitor The announcement was not entirely unexpected.
adjectivejump to other results
Police officers must be prepared for the unexpected.
the unexpectednoun[singular]jump to other results
unexpectedlyjump to other results
adverb They had arrived unexpectedly. an unexpectedly large bill The plane was unexpectedly delayed. Not unexpectedly, most local business depends on tourism. She died unexpectedly of a heart attack.
unexpectednessjump to other results
noun [uncountable] compare expect, expected