The Oxford Thesaurus An A-Z Dictionary of Synonyms - voracious adj.

1) insatiable, gluttonous, ravenous, ravening, rapacious, piggish, hoggish, cormorant, predacious, edacious, devouring, greedy, avaricious, esurient, uncontrollable, uncontrolled, unquenchable, enormous, prodigious, US cormorant: Is there no satisfying the man's voracious appetite? 2 thirsty, hungry, desirous, avid, eager, zealous, enthusiastic, fervent, fervid, ardent, earnest, passionate, devoted: It was becoming difficult to satisfy the public's voracious demand for gossip.