insatiable
Definitions
Impossible to satisfy; greedy or unquenchable.
Having an appetite or desire that is constantly wanting more.
Examples
The young entrepreneur had an insatiable hunger for success that drove him to work long hours every day.
Despite having read hundreds of books, her insatiable curiosity for knowledge kept her searching for more.
The athlete's insatiable appetite for victory pushed him to train harder than any of his competitors.
Synonyms
voracious gluttonous ravenous unquenchable insatiate greedy rapacious