A new word: convince

convince, verb, /kən'vɪns/

1 

to make someone feel certain that something is true. 
to cause (someone) to believe that something is true.

Her arguments didn’t convince everyone, but changes were made.
Baker had to convince jurors that his client had been nowhere near the scene of the murder.
The officials were eager to convince us of the safety of the nuclear reactors.
He convinced me that the story was true.
They convinced us of their innocence.
I managed to convince myself that I was doing the right thing.

2 

to persuade someone to do something. 
to cause (someone) to agree to do something.

I’ve been trying to convince Jean to come with me.
We convinced them to go along with our scheme.
I was unable to convince her to stay.