Interested is, of course, a very widely used English language word. Do know what its opposite is? Actually, there are two words which seem similar, yet have difference uses. Let's take a quick look at disinterested and uninterested.
Disinterested - having no personal involvement or receiving no personal advantage, and therefore free to act fairly. "Impartial" or "not taking sides".
"All good referees must be disinterested"
Uninterested - means not showing any interest. "not interested".
"I'm uninterested in books. I'm interested in movies."
Now write your own example sentences using disinterested and uninterested.