unpredicted
Definitions
Not foreseen or expected; occurring without prior warning.
Lacking a forecast or advance indication of its occurrence.
Examples
The unpredicted storm caused significant delays for all flights departing from the airport.
Her unpredicted arrival at the party caught everyone by surprise.
Synonyms
unexpected unforeseen sudden abrupt surprising unanticipated accidental
Antonyms
predicted expected foreseen planned anticipated calculated deliberate