Inexhaustible, inexhaustible
Similar meaning is endless, endless supply
Antonym is nothing
Definition: exhausted, completed. You can't take it all, you can't use it up. Very descriptive.
Source: Song Dynasty Su Shi's "Qian Chibi Fu": "Only the cool breeze on the river and the bright moon in the mountains can be heard by ears and become sounds, and eyes can see them and form colors. They can be taken without restriction and used without restriction. Exhausted. ”
Use case Water resources are not ~, so we must cherish water.