noun
top priority; matter of the highest priority
Used in formal or business contexts to refer to the most important issue or task that must be addressed first.
安全確保が最優先事項です。
Ensuring safety is the top priority.
会議では、予算削減が最優先事項として議論された。
At the meeting, budget cuts were discussed as the matter of the highest priority.
Compound of 最 (most), 優先 (priority), and 事項 (matter, item).