I heard my name spoken with authority by a familiar voice.
It was the voice of a German who spoke with authority.
Now he will speak to you, with greater authority than any king.
Each claims to speak with final authority on all ethical questions.
It seemed like a real person and spoke with such warm authority.
I have no special status that should allow me to speak with authority on such subjects.
The old man spoke to them without looking round, and with surprising authority in his voice.
Webster never goes behind government, and so cannot speak with authority about it.
Although the voice was that of the child, the words were spoken with great authority.
Maybe they didn't; this was the first time he had spoken with real authority in years.