Voracious (adjective)

1. Having an insatiable appetite for an activity or pursuit; ravenous.
2. Having a huge and consuming appetite; ravenous.

Origin:

From latin vorax, vorac-, from vorare "to devour".

Examples:

1. He was a voracious reader and would often stay up all night to finish a book.
2. She had a voracious appetite and would eat three large meals a day.
3. The company was voracious in its acquisition of smaller competitors.
4. He had a voracious thirst for knowledge and spent all his free time studying.
5. The predator was voracious, devouring everything in its path.