sweet talk
1. noun Speech intended to flatter or cajole someone. You're wasting your breath—all the sweet talk in the world won't get me to change my mind. Our kids always tries to get round us with sweet talk when we're mad at them.
2. verb To speak in a way that is intended to flatter or cajole someone. Often hyphenated. I can't believe I let him sweet talk me into lending him my car for the weekend. Remember the reasons why you're quitting—don't let them sweet-talk you into staying!
sweet-talk someone
Rur. to talk convincingly to someone with much flattery. I didn't want to help her, but she sweet-talked me into it. He sweet-talked her for a while, and she finally agreed to go to the dance with him.
sweet talk
Flattery, cajolery, as in She uses sweet talk to get her way. [First half of 1900s]