Merriam-Webster Collegiate Dictionary - voracious

 adjective  Etymology: Latin vorac-, vorax, from vorare to devour; akin to Old English acweorran to guzzle, Latin gurges whirlpool, Greek bibroskein to devour  Date: 1635  1. having a huge appetite ; ravenous  2. excessively eager ; insatiable a ~ reader  • ~ly adverb  • ~ness noun Synonyms:  ~, gluttonous, ravenous, rapacious mean excessively greedy. ~ applies especially to habitual gorging with food or drink teenagers are often ~ eaters. gluttonous applies to one who delights in eating or acquiring things especially beyond the point of necessity or satiety an admiral who was gluttonous for glory. ravenous implies excessive hunger and suggests violent or grasping methods of dealing with food or with whatever satisfies an appetite a nation with a ravenous lust for territorial expansion. rapacious often suggests excessive and utterly selfish acquisitiveness or avarice rapacious developers indifferent to environmental concerns.