emergency tasks; urgent business
Refers to tasks or errands that require immediate attention due to an emergency or urgent situation.
An urgent matter has come up, so we will postpone the meeting.
He left early due to an urgent errand.
急用 is a more common and general term for urgent business, while 緊急用事 emphasizes the emergency nature of the task.
Compound of 緊急 (emergency) and 用事 (business, errand).