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
but doubtless not
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "but doubtless not" is correct and usable in written English.
It can be used to express certainty about something while simultaneously indicating that the opposite is also true or that there is a lack of doubt regarding a negative aspect. Example: "He is talented, but doubtless not the best in the field."
✓ Grammatically correct
News & Media
Science
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
3 human-written examples
Despite their perilous state, the two Express titles still have some kudos as a brand, so I imagine someone would buy them – but, doubtless, not at the kind of price Desmond would wish.
News & Media
De Palma's "Carrie" is a forebear of "Django Unchained"; Peirce's "Carrie" isn't as daring or as significant as "12 Years a Slave," but it tells a familiar story with new sympathies and taps a vein of Americana that — perhaps to Peirce's surprise but doubtless not to McQueen's — turns out also to be inextricable from Africana.
News & Media
All of the uncomfortable practicalities of undressing, the likelihood of some foreplay — all of the time-unfolding elements of the action are eliminated in the interest of dispensing a bit of information: they have sex, whoever "they" are — the man is anonymous to viewers but doubtless not to Christine.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
But this is doubtless not the last of the Clinton campaign's dirty tricks.
News & Media
Ike Turner was, doubtless, not all bad, but Tina's terse comment last week made a damning epitaph: 'Tina is aware that Ike passed away earlier today.
News & Media
And that is why this week's operation in Gaza is widely viewed as having been inevitable, another painful but necessary maintenance operation that, officials here say, will doubtless not be the last.
News & Media
The Times's assistant general counsel, George Freeman, said the paper would doubtless not have published victim's names, but that, "as a point of principle, the ruling should have included a presumption of the public's viewing everything that was in open court".
News & Media
We are doubtless not the only ones to point this out, but we did notice and point out to others that at least the Aczel theory has a perfectly obvious analogue of the cumulative hierarchy.
Science
Which would doubtless not upset the general too much.
News & Media
Together they will doubtless not be able to save Weidmann's head.
News & Media
He made his unbreakable bond with me – one he was doubtless not even aware of – on Saturday 11 July 1987.
News & Media
Expert writing Tips
Best practice
Use "but doubtless not" to introduce a contrast while confidently negating a particular aspect or outcome. It's useful when you want to express a nuanced perspective, acknowledging one thing while firmly dismissing another.
Common error
While grammatically sound, "but doubtless not" can sound overly formal or stilted in casual conversation or informal writing. Opt for simpler alternatives like "but probably not" or "but I doubt it" in such situations to maintain a natural tone.
Source & Trust
94%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "but doubtless not" functions as a conjunctive phrase, linking two clauses while expressing a contrast and a degree of certainty about the negation. As Ludwig AI confirms, it is grammatically sound and usable in English.
Frequent in
News & Media
66%
Science
22%
Formal & Business
12%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "but doubtless not" is a grammatically correct phrase used to introduce a contrast while expressing certainty about a negation. As Ludwig AI indicates, this phrase is correct and usable. While the phrase appears across different contexts, it is most frequently found in news and media. Although appropriate in a variety of contexts, its formal tone is better suited to formal writing. Alternatives like ""but certainly not"" and ""but surely not"" may be more appropriate in informal contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
but certainly not
Replaces "doubtless" with "certainly", emphasizing the strength of the negation.
but undoubtedly not
Replaces "doubtless" with "undoubtedly", maintaining a similar level of formality and emphasis.
but surely not
Substitutes "doubtless" with "surely", softening the tone slightly while retaining the sense of conviction.
but definitely not
Uses "definitely" in place of "doubtless" to underscore the absence of doubt.
but assuredly not
Employs "assuredly" for a more formal and emphatic negation.
but in all likelihood, not
Adds a degree of probability to the negation, suggesting a strong expectation.
but I'm quite sure it isn't
Replaces "doubtless" with a personal declaration of certainty about the negative.
but it is unlikely
Expresses a lack of probability rather than certainty.
but it's probably not
Offers a less formal and more tentative expression of improbability.
but I highly doubt it
Conveys a strong sense of disbelief or skepticism.
FAQs
How can I use "but doubtless not" in a sentence?
You can use "but doubtless not" to introduce a contrasting point while expressing certainty about the negated aspect. For example: "The task is challenging, but "but doubtless not" impossible."
What are some alternatives to "but doubtless not"?
Some alternatives include "but certainly not", "but surely not", or "but definitely not", depending on the desired level of formality and emphasis.
Is "but doubtless not" appropriate for all types of writing?
While grammatically correct, "but doubtless not" is more suitable for formal writing. In informal contexts, consider using simpler alternatives to maintain a natural tone.
What is the difference between "but doubtless not" and "but probably not"?
"But doubtless not" conveys a stronger sense of certainty in the negation, while "but probably not" indicates a higher degree of uncertainty and is less assertive.
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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
94%
Authority and reliability
4.3/5
Expert rating
Real-world application tested