What does "conviction" mean?

Native speaker’s answer
Rebecca
"Conviction" is a firmly held belief or opinion. It can also be the quality of showing what one firmly believes. Another meaning of "conviction" is the formal declaration that someone is guilty of something. Ex: It is my deeply held conviction that people are naturally good. Ex: Her essay to the school board showed a lot of conviction. Ex: He has two other past convictions, and now he has another.