Voracious is one of several English words that derive from the Latin verb vorare, which means "to eat greedily" or "to devour." Vorare is also an ancestor of devour and of the -ivorous words, which describe the diets of various animals. These include carnivorous ("meat-eating"), herbivorous ("plant-eating"), omnivorous ("feeding on both animals and plants"), frugivorous ("fruit-eating"), graminivorous ("feeding on grass"), and piscivorous ("fish-eating").

Veracious or voracious?

Take care to distinguish between the near-homophones veracious and voracious, whose similarities in sound mask utterly different meanings. Veracious (“honest, truthful”), like its cousins veritable, verify, and very, concerns that which is true. Voracious (”having a greedy or insatiable appetite”), on the other hand, describes the urge to consume large quantities of something, often food, books, or ideas. One way to remember the difference is that the one with the E as its second letter means "truE," and the one with the O as its second letter means "ravenOus." Not coincidentally, these adjectives have near-homophonous noun derivatives: veracity ("truthfulness") and voracity ("the quality or state of being voracious").