The phrase "a grave authority" is correct and usable in written English.
It can be used to refer to someone who has significant power or influence, often in a serious or solemn context.
Example: "The committee sought the opinion of a grave authority on the matter before making their final decision."
Alternatives: "a serious authority" or "a respected authority".
Both these works have a valetudinary quality, and Vanska honoured this with such grave authority that one really could feel, as the massive final phrase of the Seventh sounded, that this was the end for Sibelius, and that his ensuing thirty-year creative silence was the necessary conclusion to the story.
"Gangland style is about Seoul's criminal underworld," one friend informed me with grave authority.
I wouldn't have been able to articulate it then, but no writer in the twentieth century did a better job of reminding us both of the importance of staying in touch with one's own sense of play, and of granting those imagined states their own grave authority.
I know of no former senior Justice Department official — Democrat or Republican — who does not view Comey's conduct in July to have been a grave usurpation of authority.
She had wanted to play out a dress rehearsal of her own funeral in the Montparnasse burial ground in Paris, she said; but for that she needed a grave, and the Montparnasse authorities, with Cartesian logic, wouldn't sell her one because she wasn't dead.
This posed a grave threat to Erdogan's authority, as the Turkish government has frequently linked the HDP to the militant Kurdish Workers Party (PKK) organization.
"Accusations of complicity in that mass murder from responsible authorities are a grave matter," they wrote.
He was superintendent of the 1,300-inmate 1,300-inmatee Prison Farm in Arkansas in 1968 when an inmate, asserting that trusties and guards had beaten and shot prisoners, led the authorities to a grave in a remote area of the farm where three bodies were found.
The Russian case mirrors a similar find in Slovakia, where police said information from a suspected cannibal's computer has led authorities to a grave containing the remains of two women.
For members of the majority party in the House, signing a discharge petition is a grave challenge to the leadership's authority.
