しゅし趣旨shushiしゅし主旨shushi
1.

The underlying intent or purpose behind an action or decision, often reflecting the reason for its initiation.

2.

The central idea or essential topic that a discussion or text aims to convey, distinct from the main point or argument.

3.

The guiding principle that informs the focus and direction of a particular initiative or project.

Example:

彼のスピーチの主旨を教えてください。