voracious (adj.)

"greediness of appetite, voraciousness," 1520s, from French voracité (14c.) or directly from Latin voracitatem (nominative voracitas) "greediness, ravenousness," from vorax (genitive voracis) "greedy, ravenous, consuming," from vorare "to devour," from PIE *gwor-a-, from root *gwora- "food, devouring."

also *gwera-, Proto-Indo-European root meaning "food, devouring."

It forms all or part of: carnivorous; devour; gorge; gurges; hellebore; herbivore; herbivorous; insectivore; locavore; omnivorous; voracious; voracity; -vorous.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit girati "devours, swallows," garah "drink;" Avestan aspo-gar- "devouring horses," nere-gar- "devouring men;" Greek bobroskein "to eat, digest," brotos "edible," brosis "eating," bora "fodder;" Latin vorare "to swallow, devour;" Armenian e-ker "ate;" Lithuanian gerti "to drink," gìrtas "drunk;" Old Church Slavonic žiro "to swallow," grŭlo "gullet," po-žreti "to eat" (of animals), "to devour."