Never-ending (adjective)

1. Endless, continuing without interruption or stop.
2. Seemingly endless, as if it will never come to an end.

Origin:

From never + ending.

Examples:

1. The never-ending cycle of war and peace.
2. The never-ending stream of paperwork.
3. A never-ending to-do list.
4. A never-ending process of evolution.
5. A never-ending story that keeps you engaged.