The phrase "a great authority" is correct and usable in written English.
It can be used to refer to someone who has significant knowledge or expertise in a particular field.
Example: "Dr. Smith is considered a great authority on climate change and its effects on global ecosystems."
Alternatives: "a leading expert" or "a prominent figure".
I must have been about 16, which made me a great authority".
We met Mr. Narindar Sarna who was wearing a turban and was described as a great authority on Indian bells.
Most of the Chinese medical literature is founded on the Huangdi neijing, and it is still regarded as a great authority.
I can't say I'm now a great authority on sailing but I certainly got a feel for its drama, the skill needed to compete and the sense of taking on the elements".
As Melanne Verveer, then the ambassador for global women's issues, told me, "He can endear himself in situations where someone viewed as a great authority or extremely formidable cannot make the connections that he can".
"He restored the pride of the Mizrachi public because nobody could deny that he was a great authority," said Yehuda Ben-Meir, a public opinion expert at the Institute for National Security Studies and a onetime politician in the Ashkenazi National Religious Party.
Of course, when the original choreographer makes those adjustments, they carry a greater authority.
Even so, convention accords hardbound volumes a greater authority than even the most meticulously prepared newspaper or magazine articles.
The two former pitchers responded with the same words when asked if they thought that having played together on the 1986 team gave them a greater authority to judge the current Mets.
As the traditional URL disappears – most people just type "Facebook" into Google, rather than writing the address, for example, it seems likely that signifiers such as the TLD will come to assume a greater authority – particularly when one company owns the whole stack.
For example, the decision to close local or regional borders may inhibit the movement of key supplies, especially when a greater authority is required to reopen a key transportation hub such as a port or an international access point.
