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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
that must be difficult
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that must be difficult" is correct and usable in written English.
You can use it when you need to acknowledge and empathize with someone who is making a challenging effort. For example, "I know you are working hard on that project - that must be difficult."
✓ Grammatically correct
News & Media
Formal & Business
Science
Alternative expressions(20)
that must be painful
that appears difficult
that must be true
That sounds challenging
that must be tough
that presents a challenge
that sounds rough
that must be challenging
that sounds difficult
that must be hard
that seems challenging
that sounds harder
that sounds hard
that sounds unpleasant
that sounds daunting
that sounds extreme
that must be nice
that seems difficult
that sounds complicated
that sounds challenging
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
4 human-written examples
While the infinitely varied life of a university student is something that must be difficult to capture on screen, I applaud the Fresh Meat team for a damn good attempt.
News & Media
That must be difficult.
News & Media
That must be difficult, because the raves are emblazoned in front of the theatre?
News & Media
That must be difficult to do, right off the bat, every night.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Is this what you thought you'd be doing with that education?" "Excuse me?" "Yes," he muses, "I can see how having to tell me what some imbecile suit doesn't have the balls to tell me himself -- that must be fairly difficult for someone as bright as yourself".
News & Media
When Guthrie noted that it must be difficult to "go through something like that in the public eye," Garner once again reminded everyone why she's so particularly beloved. .
News & Media
The husband says that he is a fair disciplinarian (although it seems to me that it must be difficult to get much disciplining done between his arrival home at 8 p.m. and the child's bedtime at 8 15) and that the mother, full time at home, is a pushover who can neither keep to a schedule nor follow through with suitable consequences.
News & Media
He concedes that life must be difficult for the Palestinians, and says he sympathises, as he believes that most are good people who want peace.
News & Media
The people I spoke to have no interest in jihad, which makes sense when you consider that it must be difficult for people here to rigidly adhere to religious dogma when they also believe that certain masks contains the spirits of their dead ancestors.
News & Media
The people I spoke to have no interest in jihad, which makes sense when you consider that it must be difficult for people here to rigidly adhere to religious dogma when they also strongly believe that certain masks contains the spirits of their dead ancestors.
News & Media
When funding falls, modernization is usually the first area to suffer, and sometimes the tradeoffs that must be made are really difficult.
News & Media
Expert writing Tips
Best practice
When using "that must be difficult", ensure your tone is empathetic and genuine. Avoid using it sarcastically or dismissively.
Common error
Avoid overstating the difficulty of a situation, as it can come across as condescending. Use "that must be difficult" when there is a clear challenge, but consider the perspective of the person experiencing it.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "that must be difficult" is to express empathy or acknowledgment of a challenging situation. Ludwig AI confirms its correct usage in various contexts, serving as a supportive statement.
Frequent in
News & Media
40%
Formal & Business
30%
Science
30%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "that must be difficult" is a grammatically correct and empathetically charged phrase, predominantly used to acknowledge the challenges someone is facing. Ludwig AI confirms its appropriate usage across various contexts, including news, business, and scientific domains. While alternatives like "that must be challenging" or "that must be tough" exist, the key is to ensure genuine empathy in your tone. Avoid overstating difficulties and be mindful of the context to maintain sincerity in your communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that must be challenging
Replaces "difficult" with a synonym, slightly altering the tone.
that must be tough
Uses a more informal synonym for "difficult".
that sounds difficult
Shifts the focus to the perception of difficulty.
that must be hard
Uses a simpler and more direct synonym for "difficult".
I imagine that's difficult
Adds a personal element of imagining the difficulty.
it must be arduous
Replaces "difficult" with a more formal and intense synonym.
it can't be easy
Uses a double negative to express the difficulty.
I can only imagine how difficult that is
Emphasizes the speaker's inability to fully grasp the difficulty.
I sympathize with the difficulty
Directly expresses sympathy regarding the difficulty.
I understand the difficulty you're facing
Highlights the understanding of the other party's difficult situation.
FAQs
How can I use "that must be difficult" in a sentence?
Use "that must be difficult" to express empathy or acknowledge someone's challenging situation. For example, "Balancing work and family must be difficult."
What are some alternatives to saying "that must be difficult"?
You can use alternatives like "that must be challenging", "that must be tough", or "that sounds difficult" depending on the context.
When is it appropriate to use "that must be difficult"?
It's appropriate to use "that must be difficult" when you want to show understanding and support for someone facing a tough situation. Avoid using it if you lack genuine empathy.
Is there a difference between saying "that must be difficult" and "that is difficult"?
Yes, "that must be difficult" conveys empathy and acknowledgment of the other person's experience. "That is difficult" is a statement of fact without necessarily showing empathy. Using "that must be difficult" implies you are considering their perspective.
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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
4.5/5
Expert rating
Real-world application tested