Exhaustibility refers to the state of being depletable or running out. Its antonyms, therefore, are words that describe something that is abundant, inexhaustible, or durable. Common antonyms for exhaustibility include permanence, perpetuity, infinity, inexhaustibility, durability, everlastingness, and immortality. These words describe things that are unending, unlimited, and impossible to exhaust or deplete. For instance, renewable resources like solar, wind, and hydroelectric power are inexhaustible sources of energy, while strong and long-lasting materials such as steel and granite have durability and permanence. Therefore, using antonyms for exhaustibility can help to highlight the availability and longevity of a particular resource or material.