INSATIABLE


 * Insatiable**

Definition: not satiable; incapable of being satisfied or appeased. Sentence: Ishmael's insatiable desire for drugs and violence permanently scarred his body and spirit. Synonym: unappeasable, yearning. Antonym: fulfilled, contented.

Because of his insatiable appetite, this man proved capable of not only eating one, but two monstrous burgers.