noun
overriding necessity; absolute requirement; absolute must
A formal, emphatic noun for something that must be done or obtained above all else; often used in policy, business, or serious personal contexts.
安全確保は至上要求だ。
Ensuring safety is an absolute requirement.
このプロジェクトの成功は至上要求である。
The success of this project is an overriding necessity.
Compound of 至上 (supreme, highest) and 要求 (demand, requirement). The exact historical derivation is uncertain, but the word follows standard Sino-Japanese compounding patterns.