The phrase "unforeseen happened" is correct and understandable in written English.
You can use this phrase when you want to describe an event that was unexpected or not planned for. Example: The power went out in the middle of our meeting and something truly unforeseen happened.
If something unforeseen happened, could she get away with changing the subject?
Mr. Bloomberg, who had repeatedly said that the city would not need to lay off workers this year unless something unforeseen happened, now appears to be weighing the possibility.
Something unforeseen happened just shy of 50 minutes into Tottenham's opening match of the season against newly promoted Crystal Palace on Sunday.
So when something hitherto unforeseen happens, there are always those who claim they foresaw it.
Unless something impossibly unforeseen happens, expect the Timberwolves to take either Towns or Jahlil Okafor.
But unless something unforeseen happens, months of time-wasting coalition bargaining can be expected after the vote.
"If you have this exclusion and something unforeseen happens, who does something about it?" he asked Mr. Greenspan in a hearing.
Medical emergency Medical expense and medical evacuation insurance covers urgent medical assistance when something unforeseen happens while you're abroad, or when you need to be evacuated.
"I would rather do that in practice instead of trying to force-feed guys in games and then something unforeseen happens.
Even before he decided to run for a third term, Mr. Bloomberg's advisers warned him of the potential peril: Four more years would increase the risk of something unforeseen happening.
So if something unforeseen happens to the economy or to British public opinion in the next three years, which it probably will, the spending review will be unpicked to allow the government to change course.
