From Longman Dictionary of Contemporary Englishunforeseeableun‧fore‧see‧a‧ble /ˌʌnfɔːˈsiːəbəl◂ $ -fɔːr-/ adjective PREDICT#an unforeseeable event, situation etc could not have been expected unforeseeable danger
Examples from the Corpus
unforeseeable• The circumstances which combined to cause this accident were unforeseeable.• The sort of liability that can arise is often unforeseeable and can be expensive.• What happened the following weekend was as unforeseeable as a plane falling on your house.• I emphasize this to make clear that what happened the following weekend was as unforeseeable as a plane falling on your house.• And that may in the end prove inadequate for any unforeseeable expenses.• But it is riddled with unforeseeable pitfalls, too.• On the contrary, it had only resulted from a number of complex and unforeseeable political developments at court.• There were so many unforeseeable things.• The fact that the burns had come about in an unforeseeable way did not render the damage too remote. 