Learner's definition of INTERESTED
[more interested; most interested]
1 a : wanting to learn more about something or to become involved in something
b : having the desire to do or have something
The listeners were all greatly/very interested in the lecture.
students who are interested in archaeology
I'd be interested to learn more about his background.
I'm interested to hear what you have to say.
I was very interested to learn that she had once lived in California.
Are you interested in playing tennis? [=would you like to play tennis?]
Would you be interested in another cup of coffee? [=would you like another cup of coffee?]
I asked him if he wanted to play tennis, but he said he wasn't interested.
2 : having a direct or personal involvement in something