important matter; necessary thing; requirement
Refers to something that must be done or attended to; often used in formal or business contexts.
明日は要事があるので、会議に出席できません。
I have an important matter tomorrow, so I cannot attend the meeting.
He suddenly returned to his country on urgent business.
necessities; necessary things
Compound of 要 (important, necessary) and 事 (matter, thing).