sweet–talk 
/ˈswi:tˌtɑ:k/ verb
sweet–talks; sweet–talked; sweet–talk·ing /ˈswi:tˌtɑ:k/ verb [+ obj] : to say nice things to (someone) in order to persuade that person to do something — often + into ▪ He tried to sweet-talk her into doing his work for him.
— sweet talk noun [noncount]
▪ Don't fall for his sweet talk.
▪ Don't fall for his sweet talk.
