origin: (1645-55) Latin rapāx/rapāc= greedy; derivative of rapere= to seize or rape
1. Covetous appetite for sustenance or items; feeding off others; prone to plunder or acquire by force; greedy.
2. Birds that subsist off live prey.
→ "ravenous" is a synonym, and that word literally derives from raven birds (who are omnivorous scavengers).
Example: Rapacious advertisers care less about cluttering your screen (or mind) and more about emptying your pockets.