1. the quality or state of being without limits; boundlessness.
Usage: formal; abstract noun

Examples

• The illimitability of space has fascinated philosophers and scientists for centuries.
• She spoke of the illimitability of human potential and imagination.
• The illimitability of the ocean's depths remains largely unexplored.
• Ancient thinkers debated the illimitability of the universe.
• The artist sought to capture the illimitability of freedom in her work.