soft spoken (softspo"kn)

Speaking softly; having a mild or gentle voice; hence, mild; affable; plausible. He has heard of one that's lodged in the next street to him who is exceedingly soft - spoken , thrifty of her speech, that spends but six words a day. B. Jonson , Epicœne, i. 1. A nice, soft - spoken old gentleman; butter wouldn't melt in his mouth. Thackeray, Pen dennis, xi.