sweet-talkvt.

sweet-talk (v.)Sweet-talk, 1935, from noun phrase; see sweet (adj.) + talk (n.). Earliest usages seem to refer to conversation between black and white in segregated U.S. "I ain\\' gonna stay heah no longah. Don\\' nevah keer, ef I do git cotched--or die. Tha\\'s bettah than to stay heah an\\' listen to Maw Haney sweet-talk the white folks, whilst they drives us clean to the grave. ..." ["The Crisis," July 1935] Latin had suaviloquens, literally "sweet-spoken."