What is the adjective form of end?

The adjective form of "end" depends on the specific meaning you want to convey. Here are some possibilities:

* Final: This is the most common and general adjective form, meaning "occurring at the end." Example: "This is the final chapter of the book."

* Terminal: This adjective implies a finality or endpoint, often referring to something that ends or stops. Example: "The illness was terminal."

* Concluding: This adjective describes something that brings a process or event to an end. Example: "He gave a concluding speech."

* Ultimate: This adjective implies the very last or most extreme point. Example: "This is the ultimate goal."

The best choice will depend on the context and the specific nuance you want to express.