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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
most regrettably
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "most regrettably" is correct and usable in written English.
It can be used to express a strong sense of regret or disappointment about a situation or decision. Example: "Most regrettably, we must inform you that your application has been unsuccessful."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
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
9 human-written examples
Most regrettably, "War" squanders the considerable merits of its leads.
News & Media
But most regrettably I am at home under house arrest".
News & Media
Lastly and most regrettably, it's hard to look away from the trials and tribulations of Chris Cairns right now.
News & Media
It combined airy religious sentiments with weak political gestures — most regrettably, a George W. Bush speech sung backward.
News & Media
Once the crown jewel of the All-Star Weekend, the game has been plagued with a Carrot-Topian over-reliance on props, a lack of star power and, most regrettably, players who miss more dunks than they make.
News & Media
Most regrettably, feminists' spontaneous nomination of the Texas state legislator Sissy Farenthold for vice president forced a roll call that helped delay McGovern's nomination acceptance speech until 2 45 a.m., thereby ensuring that almost no one would see it on television.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
With his theatre work, the problem has been the broader one of translation--most regrettably, Chereau says, in the case of Bernard-Marie Koltes, whose difficult, metaphorical plays the director has championed since they first captured his attention, in 1980.
News & Media
"This remarkable, well-researched and must-read book clearly shows how police spying on political activists has destroyed lives and that I, most unfortunately and regrettably, played a part in this.
News & Media
Most nations, regrettably, eagerly prepare for war but pay little attention to the preservation of peace.
News & Media
Regrettably, most species of Damba are on the verge of extinction, perhaps as a result of this strict endemism.
News & Media
The world's most failed state, regrettably, threatens to become a bigger problem for the rest of the world.Leo Abruzzese: editorial director, North America, Economist Intelligence Unit.
News & Media
Expert writing Tips
Best practice
Use "most regrettably" to add emphasis to your expression of disappointment or regret, particularly when addressing formal or serious matters.
Common error
Avoid using "most regrettably" in casual conversations or informal writing. Its formal tone can sound out of place and even pretentious in such settings.
Source & Trust
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "most regrettably" functions as an adverbial phrase, modifying a verb or clause to express the speaker's or writer's regret about the situation being described. According to Ludwig AI, this phrase is a correct and usable expression in written English.
Frequent in
News & Media
50%
Science
30%
Formal & Business
20%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "most regrettably" is a grammatically correct adverbial phrase used to express a strong sense of regret or disappointment, as validated by Ludwig AI. While not exceedingly common, it finds its place primarily in formal contexts such as News & Media and Science. When using the phrase, consider the register and avoid overuse in informal settings. For less formal situations, alternatives like "unfortunately" or "sadly" might be more suitable. Remember that while the phrase conveys sorrow, its formality adds weight to your message.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
most regretfully
Similar to "most regrettably" but places greater emphasis on the feeling of regret itself.
most unfortunately
Replaces "regrettably" with "unfortunately", indicating a less intense sense of regret.
most sadly
Emphasizes the sadness associated with the situation, rather than direct regret.
most disappointingly
Highlights the disappointment caused by the situation or event.
most lamentably
A more formal and literary way to express deep sorrow or regret.
most alas
An interjection expressing grief or regret, often used in a dramatic or theatrical context.
most woefully
Conveys a sense of deep sorrow or misery about a situation.
most tragically
Emphasizes the tragic nature of the event, highlighting its severe consequences.
most deplorably
Indicates strong disapproval and regret over something considered morally wrong or offensive.
most disgracefully
Highlights the shameful or dishonorable aspect of a regrettable situation.
FAQs
How can I use "most regrettably" in a sentence?
Use "most regrettably" to express a strong sense of disappointment or regret about a situation. For example, "Most regrettably, the event has been canceled due to unforeseen circumstances."
What is a less formal alternative to "most regrettably"?
Less formal alternatives include "unfortunately", "sadly", or "I regret to say", depending on the context.
Is there a difference between "most regrettably" and "regrettably"?
While both express regret, "most regrettably" adds emphasis, indicating a stronger sense of disappointment or sorrow than simply using "regrettably".
When is it appropriate to use "most regrettably" in writing?
It's appropriate in formal writing, professional communications, or when conveying a serious or somber tone. Consider the audience and context before using such a formal expression.
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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
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested