"add authority" is a correct and usable phrase in written English.
It means to enhance or strengthen the credibility or power of something or someone. It can be used in various contexts, such as in academic writing, professional communication, or persuasive speeches. Here is an example sentence: "The scientist's research findings were widely accepted and respected, but including data from a reputable source only served to add authority to his claims."
They immediately give shape and add authority.
That could add authority and legitimacy to council decisions.
Amenable academics can be cultivated to add authority to supportive analysis.
Similarly, he regarded the elaborate rituals of the courts as intending to inspire awe and add authority to their judgments.
But you only have to read this week's headlines about Algeria and Kurdish refugees to wonder whether a more assertive president might not add authority to Europe's feeble voice abroad.This is not to say that Mr Santer's commission will go down as a failure.
The return of key players such as Gigi Buffon will add authority to a side that showed practically no willingness to fight when things didn't go their way, but even taking those factors into account, it was still an extremely worrying display.
A1 TRADE TOOL -- House lawmakers announced a compromise that would give President Bush added authority to negotiate trade accords.
In that song and two by Stenhammer, the Swedish soprano Elin Rombo was clear and passionate, with a focus that added authority to her intimate voice.
But if John Terry was the figure around whom the defence massed, and whose interventions kept them in the game, Rooney added authority to the attack.
He is the highest-ranking wartime leader brought before the tribunal, and his trial will lend added authority to the court.
Recalling a lifetime of performance and protest — including acts of civil disobedience that he felt added authority when he talked about civil rights — Mr. Gregory said that he saw humor as a means of advancing social justice.
