manmade

This term is used to distinguish artificial structures or materials from those found in nature. It carries a neutral to slightly technical tone, often appearing in geographical, environmental, or industrial contexts to describe things like reservoirs, islands, or synthetic fibers.

While "artificial" is a close synonym, "manmade" specifically emphasizes the act of human construction or manufacture. In contemporary usage, "synthetic" is preferred for chemical compounds, and "artificial" is often used for imitations (like artificial flavoring), whereas "manmade" typically refers to large-scale physical creations or materials.