silver-tongued
US /ˈsɪl.vərˌtʌŋd/
UK /ˈsɪl.vərˌtʌŋd/

1.
able to speak or persuade eloquently and smoothly
:
•
The silver-tongued politician convinced many voters with his speech.
•
Her silver-tongued charm made her popular with everyone.
able to speak or persuade eloquently and smoothly