English word -vore comes from Proto-Indo-European *gʷerh₃-
*gʷerh₃- (Proto-Indo-European)
to devour
voro (Latin)
(figuratively) I destroy, overwhelm.. (figuratively) I read eagerly.. (vulgar) I fellate. I devour; I eat greedily.. I swallow up.
vorare (Latin)
-vore (English)
An animal, identified by its kind of diet.