Main entry: inexhaustible
Definition: incapable of being entirely consumed or used up
Usage: an inexhaustible supply of coal
Antonyms: exhaustible
Definition: capable of being used up
Antonyms: unrenewable, nonrenewable
Definition: that can not be renewed
Main entry: unlimited, inexhaustible
Definition: that cannot be entirely consumed or used up
Usage: an inexhaustible supply of coal
Antonyms: finite
Definition: bounded or limited in magnitude or spatial or temporal extent
Antonyms: finite
Definition: of verbs; relating to forms of the verb that are limited in time by a tense and (usually) show agreement with number and person