Noah Webster's Dictionary (a.) Incapable of being emptied or used up; as an inexhaustible supply; unfailing; not to be wasted or spent; as, inexhaustible stores of provisions; an inexhaustible stock of elegant words.

Multi-Version Concordance Inexhaustible (2 Occurrences) Luke 12:33 Sell your possessions and give alms. Provide yourselves with purses that will never wear out, a treasure inexhaustible in Heaven, where no thief can come nor moth consume. (WEY) Romans 11:33 Oh, how inexhaustible are God's resources and God's wisdom and God's knowledge! How impossible it is to search into His decrees or trace His footsteps! (WEY)