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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
be a formidable adversary
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be a formidable adversary" is correct and usable in written English.
You can use it when describing someone or something that poses a significant challenge or threat to another person or entity. Example: "In the upcoming competition, our team must prepare to be a formidable adversary to the reigning champions."
✓ Grammatically correct
News & Media
Encyclopedias
Sports
Alternative expressions(1)
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
8 human-written examples
He would indeed be a formidable adversary.
News & Media
He'll be a formidable adversary".
News & Media
While Hislop can be a formidable adversary, he is also a very good ally.
News & Media
And for all that Mr Cameron appears to be impatient to see Mr Brown installed as prime minister, he knows him to be a formidable adversary, very different from the shambling political zombie poor John Major had become.
News & Media
The 40-year-old coach has moulded Fiorentina into an attractive passing team, who could prove to be a formidable adversary for Tottenham in their last-32 tie of the Europa League at White Hart Lane this evening.
News & Media
In pursuing his plan for an alliance with France and Italy to corner Prussia in the east, he proved to be a formidable adversary of Bismarck, much superior to Napoleon III of France in political skill and cleverness.
Encyclopedias
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
"Karl is a formidable adversary".
News & Media
Revis acknowledged that Burress was a formidable adversary.
News & Media
Since Arthur's childhood, his stepmother, Carol Sulzberger, had been a formidable adversary.
News & Media
Another seasoned bass, Eric Halfvarson, as the Grand Inquisitor, is a formidable adversary of the king.
News & Media
With his law and science background, he is a formidable adversary for the climate change team.
News & Media
Expert writing Tips
Best practice
Use this phrase to create a sense of dramatic tension in narratives, reports, or analyses.
Common error
Avoid using "be a formidable adversary" to describe routine challenges or minor inconveniences. Reserve it for situations where the opponent genuinely possesses significant strength or skill.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be a formidable adversary" functions as a predicate nominative, describing the subject as someone or something that presents a significant challenge or threat. As supported by Ludwig, the expression is grammatically correct and commonly used.
Frequent in
News & Media
75%
Encyclopedias
12%
Sports
12%
Less common in
Formal & Business
0%
Wiki
0%
Science
0%
Ludwig's WRAP-UP
In summary, the phrase "be a formidable adversary" is a grammatically sound and relatively frequent expression used to describe someone or something that presents a significant challenge. Ludwig confirms its correctness and usability in formal and informal contexts. It’s primarily found in News & Media, Encyclopedias, and Sports and less frequent in contexts such as Formal & Business, Wiki, and Science. When writing, it is best to reserve this phrase for scenarios involving genuinely strong opponents. Remember to differentiate this expression from similar ones like "be a tough opponent", which carries less gravitas.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
constitute a tough opponent
Replaces "formidable adversary" with synonyms that maintain a similar level of intensity, but focuses more on direct competition.
present a considerable challenge
Shifts the focus from the person to the situation they create, implying difficulty.
prove to be a serious threat
Highlights the potential danger posed, emphasizing the negative aspect of facing this person.
represent a difficult hurdle
Uses a metaphorical expression, portraying the person as an obstacle to overcome.
pose a significant obstacle
Similar to "difficult hurdle", focusing on the obstruction presented by the person.
be a force to be reckoned with
Emphasizes the power and influence of the person, suggesting they cannot be ignored.
be a tough customer
Informal idiom suggesting someone is difficult to deal with or defeat.
offer stiff competition
Focuses on the competitive aspect, suggesting the person is a strong rival.
be a strong contender
Highlights the person's ability and likelihood of success in a competition.
be a real handful
An informal expression that implies that the person is troublesome and difficult to manage.
FAQs
How can I use "be a formidable adversary" in a sentence?
You can use "be a formidable adversary" to describe someone or something that poses a significant challenge. For example, "The defending champion will "constitute a tough opponent" in the upcoming tournament".
What are some alternatives to "be a formidable adversary"?
Alternatives include phrases like "be a strong contender", "pose a significant obstacle", or "be a force to be reckoned with", depending on the specific nuance you want to convey.
Is it appropriate to use "be a formidable adversary" in formal writing?
Yes, "be a formidable adversary" is suitable for formal writing, especially when describing competitive situations or significant challenges. However, consider the context and audience to ensure it aligns with the overall tone.
What is the difference between "be a formidable adversary" and "be a tough opponent"?
"Be a formidable adversary" suggests a higher level of respect and acknowledges greater skill or strength in the opponent, while "be a tough opponent" simply implies that the person or thing is difficult to overcome. The former carries a more significant weight.
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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
4.6/5
Expert rating
Real-world application tested