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
they undoubtedly
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they undoubtedly" is correct and usable in written English.
It can be used to express a strong belief or certainty about a statement or situation involving a group of people or things. Example: "They undoubtedly have the skills needed to succeed in this competitive environment."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
58 human-written examples
In various ways, they undoubtedly are.
News & Media
They undoubtedly work for the city.
News & Media
They undoubtedly have a point.
News & Media
To the uninitiated, they undoubtedly seemed astoundingly lucky.
News & Media
They undoubtedly have a more slippery, but also cleaner, feel.
News & Media
They undoubtedly deserve praise for their breaking of news stories.
News & Media
They undoubtedly have the support of their nation.
News & Media
Their target had a second symbolic dimension that they undoubtedly also understood.
News & Media
(They undoubtedly would have done more, but they lacked the Republican base for funding such efforts).
News & Media
Such areas were presumably dangerous since they undoubtedly attracted numerous predators.
Encyclopedias
They undoubtedly influence the industry, its audiences and wider public attitudes.
News & Media
Expert writing Tips
Best practice
Use "they undoubtedly" to express a strong conviction or certainty about a group's actions, qualities, or future outcomes. It adds emphasis and confidence to your statement.
Common error
While "they undoubtedly" is effective for expressing certainty, overuse can make your writing sound repetitive or overly assertive. Vary your language by using synonyms like "they certainly" or "they unquestionably" to maintain reader engagement.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they undoubtedly" functions as an adverbial phrase that modifies a verb or clause. It expresses a strong degree of certainty or conviction about the statement being made. Ludwig examples confirm its use in asserting confidence.
Frequent in
News & Media
63%
Science
22%
Encyclopedias
7%
Less common in
Formal & Business
3%
Wiki
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "they undoubtedly" is a versatile adverbial phrase used to express a strong sense of certainty. Ludwig AI analysis confirms its grammatical correctness and common usage across various contexts, particularly in news, media, and scientific writing. While effective for conveying conviction, it's important to avoid overuse to maintain writing clarity and engagement. Consider alternatives like "they certainly" or "they unquestionably" for variety. With its common usage and versatile application, mastering "they undoubtedly" can enhance your writing style.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they certainly
Replaces "undoubtedly" with "certainly", offering a slightly less formal tone but maintaining the sense of conviction.
they surely
Substitutes "undoubtedly" with "surely", indicating a confident expectation or belief.
they unquestionably
Substitutes "undoubtedly" with "unquestionably", emphasizing the lack of doubt and strengthening the assertion.
they undeniably
Replaces "undoubtedly" with "undeniably", indicating that the statement is impossible to contradict.
they definitely
Replaces "undoubtedly" with "definitely", providing a more informal but firm expression of certainty.
they without a doubt
Replaces "undoubtedly" with the phrase "without a doubt", emphasizing the absence of any uncertainty.
they assuredly
Substitutes "undoubtedly" with "assuredly", offering a more formal and emphatic assertion.
they indisputably
Substitutes "undoubtedly" with "indisputably", suggesting the point is beyond any argument.
they most likely
Replaces "undoubtedly" with "most likely", softening the certainty to a high probability.
it's clear they
Rephrases the sentence to lead with "it's clear", emphasizing the obviousness of the subsequent statement.
FAQs
How can I use "they undoubtedly" in a sentence?
Use "they undoubtedly" to express a strong belief or certainty about a group's action or quality. For example, "They undoubtedly have the skills needed for this task" suggests a firm belief in their abilities.
What are some alternatives to "they undoubtedly"?
You can use alternatives such as "they certainly", "they unquestionably", or "they definitely" depending on the context and level of formality you want to convey.
Is "they undoubtedly" formal or informal?
"They undoubtedly" is generally considered neutral to slightly formal. While suitable for most writing contexts, consider using a less emphatic phrase like "they most likely" for very informal situations.
What's the difference between "they undoubtedly" and "they probably"?
"They undoubtedly" conveys a strong sense of certainty and conviction, whereas "they probably" indicates a higher degree of uncertainty or likelihood. Use "they undoubtedly" when you are very confident, and "they probably" when there's a chance things might be different.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested