voracious

Concise Oxford English Dictionary © 2008 Oxford University Press:
voracious /vəˈreɪʃəs/

▶adjective

• 1 wanting or devouring great quantities of food.

• 2 very eager or enthusiastic in one's approach: a voracious reader.

– derivatives
voraciously adverb,
voraciousness noun,
voracity noun.

– origin C17: from L. vorax, vorac- (from vorare ‘devour’) + -ious.