To make someone happy or to give them what they want or need.
Satisfy is a good feeling. It means everything is okay and people are happy.
Examples:
Eating ice cream can satisfy your sweet tooth.
I need to satisfy my hunger with some food.
She satisfies her customers by giving them what they want.
I can satisfy my need for speed by riding a fast bike.
Winning the game will satisfy my desire to be the best.
He satisfies his curiosity by asking a lot of questions.