Overarching (adjective)

1. Extending or spread over a large area.
2. Having a wide range of influence or effect.
3. Having a dominant position or role.
4. Encompassing or embracing a number of smaller things or parts.

Origin:

Mid 19th century: from over- + arch1.

Examples:

1. The overarching theme of the book is the importance of family.
2. The overarching goal of the company was to maximize profits.
3. The overarching strategy of the government was to reduce poverty.
4. The overarching influence of the media on society is undeniable.
5. The overarching design of the park was to create a peaceful and relaxing environment.