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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
excellent authority
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "excellent authority" is correct and usable in written English.
It can be used to describe someone or something that is highly credible or knowledgeable in a particular field or subject. Example: "The research was conducted under the guidance of an excellent authority in environmental science."
✓ Grammatically correct
News & Media
Books
General Discussion
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
7 human-written examples
Anonymous I have it on excellent authority (a younger nephew) that "the wheels on the bus go round and round".
News & Media
I have it on excellent authority that the obligations of the mother of the groom are threefold: Show up, shut up and wear beige.
News & Media
Speak the truth without impudence, or I have it on excellent authority (although not the Grimms') that your nose will grow longer and you will come to a most uncomfortable end.
News & Media
We regret to have to report, on excellent authority, that subsequent to Dec. 12, the following have, probably among many others, been detained: Jo Beall, Adonyha Dhthwathe... John James, Bill Jardine... William Thomas, Molefe Tsele and Lechesa Tsenoli.
News & Media
Whitney, Lincoln's friend from Illinois and a frequent visitor to the White House, recounted "on excellent authority" that a distinguished visitor left the White House disgusted after being interrupted by "a silly, grotesque, and inapplicable anecdote".
News & Media
I have it on excellent authority that Princes William and Harry are both perfectly nice types, with the standard range of character pluses and minuses: William is not the industrious, untroubled one, and Harry is not the messed-up sex fiend on speed.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
Even after government cuts, we still have many excellent local authority swimming pools; there's a fashion for free swimming and sea swimming.
News & Media
It is rendering itself increasingly irrelevent – except in those many cities where it runs excellent local authorities, whose autonomous leaders detach themselves from the central party.
News & Media
She told BBC Good Morning Wales: "We do have some excellent local authorities, but this has cast a shadow now over... our chief executives, who do work within their remit in an honest and transparent manner.
News & Media
Here and throughout the evening the musicians — members of the ensemble Le Train Bleu — were excellent, conducted with precise authority by Ransom Wilson.
News & Media
Lansley said that he was "delighted" to announce Grant as his preferred chair, adding that he has "distinction and authority" and excellent leadership skills.
News & Media
Expert writing Tips
Best practice
When using "excellent authority", ensure the source truly possesses deep knowledge and credibility in the subject matter. Back up the claim with specifics about their credentials or experience.
Common error
Avoid using "excellent authority" lightly. Overusing it can diminish its impact. Reserve it for sources with genuinely exceptional expertise and recognized standing.
Source & Trust
95%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "excellent authority" functions as a noun phrase where the adjective "excellent" modifies the noun "authority". It is used to describe someone or something as a highly credible or knowledgeable source of information, as exemplified by Ludwig's examples.
Frequent in
News & Media
57%
Books
29%
Science
14%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "excellent authority" is a phrase used to highlight the high credibility and expertise of a source. As Ludwig AI confirms, it is grammatically correct and most commonly found in news, books, and science-related contexts. While not extremely frequent, the phrase is a powerful way to emphasize the reliability of information, making it useful in persuasive writing and discussions. Remember to use it judiciously, reserving it for sources that truly warrant such a strong endorsement. Consider alternatives such as "credible source" or "reputable expert" depending on the specific nuance you wish to convey.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
recognized authority
Highlights the acknowledged expertise of the individual.
authoritative figure
Emphasizes the influence, command, and reliability of the source.
credible source
Focuses on the trustworthiness of the source rather than their high level of expertise.
reputable expert
Highlights the expert status of the source and their good reputation.
reliable source
Highlights the source's dependability and accuracy.
esteemed figure
Emphasizes the high regard in which the person is held.
leading expert
Stresses the person's position at the forefront of their field.
notable expert
Emphasizes the prominence and importance of the expert.
expert of high standing
Indicates a professional whose opinions and work are highly valued.
respected voice
Focuses on influence and credibility within a specific area.
FAQs
How can I use "excellent authority" in a sentence?
You can use "excellent authority" to describe a highly credible source of information. For example, "I have it on "excellent authority" that the project will be completed on time."
What is a good alternative to "excellent authority"?
Alternatives to "excellent authority" include "credible source", "reputable expert", or "recognized authority". The best choice depends on the specific context.
Is it better to say "excellent authority" or "good authority"?
"Excellent authority" emphasizes a higher degree of credibility and expertise compared to "good authority". Use "excellent" when you want to highlight the exceptional qualifications of the source.
What does it mean to have something on "excellent authority"?
To have something on "excellent authority" means you've received information from a source considered highly reliable and knowledgeable. It suggests a strong basis for believing the information to be accurate.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
95%
Authority and reliability
4.5/5
Expert rating
Real-world application tested