Used metaphorically for a strong desire or ambition, especially for success, knowledge, or achievement. Not used for literal hunger.
He is hungry for success.
若い頃はもっとハングリーに勉強していた。
When I was younger, I studied with more hunger.
He's a very hungry, ambitious person who's always aiming higher.
She's hungry for success.
After his failure, he became even more driven and hungry for success.
When I was young, I lived with more hunger and drive.