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
the challenge is
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "the challenge is" is correct and usable in written English.
You can use it to introduce a problem or difficulty that needs to be addressed or overcome. Example: "The challenge is finding a balance between work and personal life in today's fast-paced environment."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(18)
the difficulty lies in
the main obstacle is
the problem stems from
the crux of the matter is
the heart of the issue is
the key question is
the primary concern is
the obstacle is
the predicament is
the difficulty is
the business is
the problem is
the challenges is
the challenge lies
but herein lies the rub
but herein lies the issue
but herein lies the challenge
but herein lies the problem
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
60 human-written examples
The challenge is elsewhere.
News & Media
The challenge is huge.
News & Media
The challenge is on.
News & Media
The challenge is enormous.
News & Media
The challenge is steep.
News & Media
The challenge is personnel.
News & Media
The challenge is nothing new.
News & Media
But the challenge is enormous.
News & Media
The challenge is understanding why.
News & Media
The challenge is real.
The challenge is obvious.
News & Media
Expert writing Tips
Best practice
Use "the challenge is" to clearly introduce a specific problem or difficulty that needs to be addressed. This helps focus the reader's attention on the key issue.
Common error
Avoid using "the challenge is" as a generic filler. Always follow it with a clear and specific explanation of what the challenge actually entails to provide clarity for your audience.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "the challenge is" functions as a declarative statement introducing a problem or difficulty. It sets the stage for further explanation or discussion, as seen in Ludwig's examples like, "The challenge is enormous" or "The challenge is steep."
Frequent in
News & Media
67%
Science
18%
Formal & Business
7%
Less common in
Academia
5%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "the challenge is" is a versatile and commonly used phrase to introduce a specific problem or difficulty. Ludwig AI confirms its grammatical correctness and widespread usage across various contexts, particularly in news media. While versatile, it is important to ensure that the phrase is followed by a clear explanation of the challenge to avoid vagueness. Related phrases, such as "the difficulty lies in" or "the main obstacle is", can offer nuanced alternatives depending on the desired emphasis. Remember to be specific and provide context when using "the challenge is" to maximize its impact.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
the difficulty lies in
Replaces "challenge" with "difficulty" and restructures the sentence to emphasize where the problem originates.
the main obstacle is
Substitutes "challenge" with "obstacle", highlighting a barrier that must be overcome.
the problem stems from
Indicates that the challenge originates from a specific source or cause.
the real test is
Focuses on the aspect that will truly determine success or failure.
the crux of the matter is
Highlights the most important or decisive point of the challenge.
the heart of the issue is
Emphasizes the central aspect or core concern related to the challenge.
the key question is
Replaces the challenge with a central question that needs to be answered.
the hurdle to overcome is
Highlights the "challenge" as a hurdle that must be surpassed.
the primary concern is
Shifts the focus to the most important worry or concern related to the challenge.
the task at hand is
Replaces "challenge" with the more direct term "task", implying a specific action to be completed.
FAQs
How can I use "the challenge is" in a sentence?
Use "the challenge is" to introduce a specific problem or difficulty. For example, "The challenge is funding the project effectively".
What are some alternatives to "the challenge is"?
You can use alternatives like "the difficulty lies in", "the main obstacle is", or "the problem stems from" depending on the context.
Is it grammatically correct to say "the challenges are"?
Yes, "the challenges are" is grammatically correct when referring to multiple challenges. "The challenge is" is used for a single, specific challenge.
What's the difference between "the challenge is" and "the opportunity is"?
"The challenge is" highlights a difficulty or obstacle, while "the opportunity is" emphasizes a potential benefit or advantage. They represent opposing perspectives on a given situation.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested