Definitions:

1. Cannoy be entirely consumed or used up. ADJECTIVE
   • Her passion for teaching seemed inexhaustible, inspiring generations of students.
2. Describes something that cannot be depleted, used up, or exhausted. ADJECTIVE
   • The library offered an inexhaustible wealth of knowledge for anyone eager to learn.
3. Implies an endless or infinite supply, resource, or energy. ADJECTIVE
   • The sun is an inexhaustible source of energy, providing solar power for billions of years.

Synonyms:

• bottomless
• boundless
• endless
• immesurable
• incalculable
• infinite
• limitless
• unbounded
• unfailing
• unlimited