Used and loved by millions
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
Duly authorized
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Duly authorized" is correct and usable in written English.
It is typically used to indicate that someone has been officially given the power or permission to act on behalf of an organization or individual. Example: "The contract was signed by John Smith, who is duly authorized to represent the company in this matter."
✓ Grammatically correct
News & Media
Formal & Business
Encyclopedias
Science
Wiki
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
20 human-written examples
The authority of the duly authorized hierarchy was enhanced by the outcome of another 2nd-century debate, which concerned the possibility of absolution for sins committed after baptism.
Encyclopedias
If so requested by the Deputy Regional Representative or a duly authorized official, the appropriate authorities of Kenya shall provide a sufficient number of police for the preservation of law and order in the Subregional Office Seat and for the removal therefrom of offenders.
Formal & Business
A few years earlier the letter of Bishop Clement of Rome (c. ad 95) to the church at Corinth based the hierarchy's authority on the concept of a historical succession of duly authorized teachers.
Encyclopedias
When the family visits were duly authorized, Cancio says, his business was "all ready to go".
News & Media
This allows another option prior to being blown out of the sky by a duly authorized F-16 missile.
News & Media
The voters have, in fact, duly authorized all of the state's general obligation bonds, but the much larger pension debt is appearing out of nowhere.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
40 human-written examples
The slaughter house is duly approved and authorized by the Municipal Corporation, New Delhi, India for the exclusive purpose of 'slaughtering the animals', intended for the human consumption as permitted in the Bye-Laws.
Science
Thatcher authorized her release.
News & Media
Who authorized these payments?
News & Media
They were not authorized.
Wiki
was authorized on April 27 , 1904
Wiki
Expert writing Tips
Best practice
Use "duly authorized" to clearly indicate that someone has the official right or permission to perform a specific action or represent an entity. This adds a layer of formality and legitimacy to your writing.
Common error
Avoid assuming that because someone is "duly authorized" in one area, they are authorized in all areas. Always specify the context or scope of the authorization to prevent ambiguity.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "duly authorized" functions as an adjectival modifier, typically preceding a noun to specify that the noun (usually a person or document) has been officially and correctly given permission or power to act. Ludwig AI confirms its use in establishing legitimacy and proper procedure.
Frequent in
News & Media
30%
Formal & Business
25%
Encyclopedias
15%
Less common in
Science
15%
Wiki
15%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "duly authorized" is a common and grammatically correct adjectival modifier that indicates official permission or empowerment. As Ludwig AI confirms, its primary function is to assert legitimacy and validity, often appearing in formal and professional contexts such as legal documents, business communications, and news reports. While alternatives like "officially sanctioned" or "legally empowered" exist, "duly authorized" provides a specific emphasis on the correctness and procedural integrity of the authorization process. To ensure clarity, it's crucial to specify the scope of authorization and avoid assuming blanket authority. Ultimately, using "duly authorized" enhances the formality and credibility of written communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Properly authorized
Replaces "duly" with "properly", emphasizing the correctness of the authorization process.
Officially sanctioned
Uses "officially sanctioned" to highlight the formal approval aspect.
Legally empowered
Focuses on the legal aspect of being authorized, implying legal authority.
Validly approved
Emphasizes the validity of the approval process.
Appropriately accredited
Highlights accreditation as the form of authorization.
Duly licensed
Specifically refers to authorization through licensing.
Empowered by authority
Rephrases to emphasize the empowerment aspect derived from a recognized authority.
With proper authorization
Changes the structure to a prepositional phrase, indicating possession of authorization.
Having received authorization
Rephrases as a participial phrase, emphasizing the act of receiving authorization.
Under due authorization
Emphasizes that the action occurs under the correct and expected authorization.
FAQs
What does "duly authorized" mean?
The term "duly authorized" means someone has been officially given the power or permission to act on behalf of an organization or individual.
How can I use "duly authorized" in a sentence?
You can use "duly authorized" in sentences like, "The contract was signed by John Smith, who is "properly authorized" to represent the company."
What are some alternatives to "duly authorized"?
Some alternatives include "officially sanctioned", "legally empowered", or "validly approved" depending on the context.
Is it redundant to say "duly authorized and approved"?
While both words relate to permission, "duly authorized" implies the correct procedure was followed to grant permission, while "approved" simply means it was accepted. Using both can add emphasis, but might be redundant depending on context.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested