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
a formidable subject
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a formidable subject" is correct and usable in written English.
It can be used to describe a topic that is challenging, impressive, or worthy of respect, often in academic or intellectual contexts. Example: "The professor introduced us to a formidable subject that required extensive research and critical thinking."
✓ Grammatically correct
News & Media
Science
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
2 human-written examples
IN "Two Moons," Thomas Mallon, one of our finer novelists writing about politics (especially those of the 19th century) and science, takes on a formidable subject: nothing less than the vastness of the universe and the wish to be immortal.
News & Media
This year's Fountain House Symposium and Luncheon took on a formidable subject.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
He tackles an equally formidable subject in "The Human Scale," a production of the Public Theater and 3-Legged Dog being presented at the 3LD Art and Technology Center.
News & Media
Johnson, who teaches history at Boston College, has taken on a formidable and sensitive subject and has largely conquered it, thanks to indefatigable research and a rigorous, unblinking analysis.
News & Media
For a slim book, "The Goshawk" has, like its subject, a formidable wingspan.
News & Media
Jenny Roberts, who has died aged 75, was a leading health economics researcher in the field of public health issues in the UK, a widely respected teacher and a formidable advocate for her subject.
News & Media
Mr. Mortier has also commissioned a formidable modernist, Charles Wuorinen, on a subject with proven populist appeal, "Brokeback Mountain".
News & Media
Structural masonry has a formidable history, which has been subjected to much analysis by scholars in architecture and engineering.
Bone infection remains a formidable challenge to the medical field.
A formidable proportion expressed migratory inclinations in our study.
Science
IT was a formidable challenge to create a craft show that did not home in on one subject or technique, formidable on many levels.
News & Media
Expert writing Tips
Best practice
Use "a formidable subject" when you want to emphasize the challenging yet impressive nature of a topic, especially in academic or intellectual discussions.
Common error
Avoid using "a formidable subject" in casual conversations or informal writing. It can sound overly formal or pretentious in contexts where a simpler description would suffice.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a formidable subject" functions as a noun phrase, where "formidable" is an adjective modifying the noun "subject". As Ludwig AI confirms, the phrase is correct and usable in written English.
Frequent in
News & Media
67%
Science
33%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "a formidable subject" is a phrase used to describe a challenging and impressive topic, often in academic or professional settings. Ludwig AI confirms it is correct and usable, though its frequency is relatively rare. It commonly appears in "News & Media" and scientific contexts, emphasizing the topic's complexity and significance. While grammatically sound, overuse in informal settings should be avoided. Related phrases include alternatives such as "a challenging topic" or "a daunting task", depending on the specific nuance you intend to convey.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
an imposing topic
Similar to "formidable" but carries a slightly stronger sense of grandeur or difficulty.
a challenging topic
Replaces "formidable" with a more common and less intense adjective.
a significant challenge
Focuses on the challenging aspect and importance of the issue.
a daunting task
Shifts the focus to the difficulty of the task rather than the subject itself.
a complex issue
Emphasizes the intricacy and multifaceted nature of the subject.
a substantial undertaking
Highlights the scale and effort required to address the subject.
a demanding theme
Highlights the rigorous requirements and expectations associated with the subject.
a weighty matter
Highlights the importance and potential consequences of the topic.
a serious matter
Underscores the gravity and importance of the topic.
a noteworthy subject
Emphasizes the importance and attention-worthiness of the topic.
FAQs
What does "a formidable subject" mean?
The phrase "a formidable subject" describes a topic or issue that is challenging, impressive, and worthy of respect due to its complexity or significance.
How can I use "a formidable subject" in a sentence?
You might say, "The professor introduced us to "a formidable subject" that required extensive research." or "Suicide: Looking for Answers, the event recently drew more than."
What are some alternatives to "a formidable subject"?
Alternatives include "a challenging topic", "a daunting task", or "a complex issue", depending on the specific nuance you want to convey.
Is "a formidable subject" formal or informal?
"A formidable subject" is generally considered a more formal expression, suitable for academic, professional, or news-related contexts.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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