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
the undersigned certifies that
Grammar usage guide and real-world examplesUSAGE SUMMARY
'the undersigned certifies that' is a correct and usable expression.
It is mainly used in a legal capacity to certify the validity or accuracy of certain information or a statement. For example: The undersigned certifies that this document contains the full and accurate details of the agreement between the two parties.
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(20)
this is to assure that
this is to prove that
it is hereby certified that
it has been verified that
this is to certify that
we are pleased to announce that
this is to verify that
the signatory confirms that
please be advised that
it is warranted that
this is to attest that
I can confirm that
it is officially confirmed that
i hereby certify that
I hereby certify that
we hereby attest that
this is to assert that
this is to demonstrate that
this is to emphasize that
i hereby declare that
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Competing interests I, the undersigned, certify that the BANNISTER clinical trial «Beta Agonist Nebulization in Non Invasively ventilated Chronic Obstructive Pulmonary Disease (COPD) patients: Safety and Therapeutic Efficacy Range» , was funded by Association pour la Promotion à Tours de la Réanimation Médicale and the bench study by Inserm.
Science
I could have made a personal declaration that "I will always be too expensive to buy", but that was clearly a no-no, so I put my signature instead to a form stating that "I, the undersigned, hereby certify that I will always mean what I say".
News & Media
Every prescription blank should include the following assurance: "This certifies that the undersigned physician has no direct or indirect financial interest in the sale of the medication designated in this prescription and has received no gift or other benefit from any person or company with such an interest".
News & Media
However, rather than certifying the restaurant's food, the Tav HaYosher certifies that the restaurant's workers are treated and paid ethically and legally.
News & Media
Mad He is among more than 40 academics, campaigners and professionals to have signed the letter, reproduced below: Dear Prime Minister, We the undersigned request that HM Government immediately reconsiders the proposed Psychoactive Substances Bill (2015).
News & Media
We, the undersigned, believe that if we are to effectively combat the scourge of neurodegenerative and other crippling diseases, we will require the careful and considered use of nonhuman primates.
News & Media
We, the undersigned, believe that the world is at a critical crossroads.
News & Media
Sign up now to get the best oForICE Canada delivered sthisght to youreasonx.
News & Media
"In this case, the undersigned finds that Plaintiff fails to state a facially plausible federal claim," she said.
News & Media
Since nearly everyone, including the undersigned, believed that stocks were overpriced (incorrectly in retrospect) the idea that one of the largest investors was heading for the exit was thought to have triggered a stampede among other investors.
News & Media
[2] Howard Frumkin, MD, Dr.PH, Director, National Center for Environmental Health, CDC "We the undersigned believe that climate change is the public health challenge of the 21st Century and that, unless decisive action is taken now, the world will face global public health and environmental catastrophe".
Science
Expert writing Tips
Best practice
Use "the undersigned certifies that" in formal documents, legal statements, or official correspondence where a declaration of truth or accuracy is required. Ensure that you, as the undersigned, have the authority and knowledge to make such a certification.
Common error
Avoid using "the undersigned certifies that" to certify information you are not fully knowledgeable about or have not independently verified. This phrase carries a weight of personal assurance and responsibility.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
"The undersigned certifies that" functions as a formal declaration or attestation within legal, official, or business contexts. It is used to assert the validity or accuracy of a statement or document, often carrying legal implications. As Ludwig AI indicates, it's mainly used in a legal capacity.
Frequent in
Formal & Business
34%
News & Media
33%
Science
33%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "the undersigned certifies that" is a formal and legally-tinged declaration phrase, primarily used in official, legal, and business contexts to affirm the accuracy or validity of information. Ludwig AI confirms that this phrase is mainly used in a legal capacity to certify validity or accuracy. While grammatically correct, its use is relatively rare, yet impactful in establishing accountability. When a less formal tone is acceptable, alternatives such as "I hereby certify that" or "the signatory confirms that" might be considered. Always ensure you have the authority to certify the information before using this phrase.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
i hereby certify that
Uses "I hereby" for a first-person declaration, differing in perspective.
the signatory confirms that
Replaces "undersigned" with "signatory" and "certifies" with "confirms", slightly altering the tone.
i affirm that
Uses a more direct and assertive verb "affirm" instead of "certifies".
the person below attests that
Replaces "undersigned" with a descriptive phrase and "certifies" with "attests", making it slightly less formal.
it is hereby certified that
Changes the sentence structure to a passive voice, which is less direct.
i warrant that
Employs "warrant" which carries a stronger legal connotation.
the individual below verifies that
Substitutes "undersigned" with "individual below" and "certifies" with "verifies", resulting in a more descriptive statement.
this is to certify that
Introduces a more explanatory tone, useful in certificates.
the undermentioned guarantees that
Uses "undermentioned" as a more archaic synonym for "undersigned" and "guarantees" instead of "certifies".
i can confirm that
Offers a more conversational alternative using "confirm" in the first person.
FAQs
When is it appropriate to use "the undersigned certifies that"?
This phrase is appropriate in formal and legal contexts where you need to formally declare the truth or accuracy of a statement. Think official documents, contracts, or sworn affidavits.
What are some alternatives to "the undersigned certifies that"?
You can use alternatives such as "I hereby certify that", "the signatory confirms that", or "I affirm that" depending on the context and desired level of formality.
What does "the undersigned" mean?
"The undersigned" is a formal way of referring to the person who is signing a document. It's used to indicate that the person making the statement is the same person who has signed below.
Is "the undersigned certifies that" legally binding?
The legal weight of "the undersigned certifies that" depends on the specific document and the laws governing it. In many cases, it does create a legally binding statement, making the signer responsible for the accuracy of the certified information.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested