A tendency to be eloquent and persuasive in speaking:it is likely that his silver tongue had got around her...
So, what if you weren't born with a silver tongue?
My only saving grace is my silver tongue - I am pretty good with words, but not much else.
Timothy was the obvious asset: with his sterling reputation and silver tongue, no mental powers might be necessary.
Derivatives
silver-tongued
/ˌsɪlvəˈtʌŋd /adjective...
He seduces a lonely teenage girl (Evan Rachel Wood) and becomes a hero to her younger brother, but dangerous forces lurk beneath his silver-tongued surface.
The silver-tongued Casanova, who turned deception into an art form, convinced them to abandon their studies, betray their wealthy farming families and jettison their self-respect.
A fax was promised to me but never came; the silver-tongued deceiver will be made to pay.