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
hard to understand
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "hard to understand" is correct and usable in written English.
You could use it when referring to something that is too difficult to comprehend or makes little sense. For example: "The professor's lectures are often hard to understand."
✓ Grammatically correct
News & Media
Academia
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
60 human-written examples
It's hard to understand.
News & Media
It's hard to understand today.
News & Media
What was hard to understand?
News & Media
Is that hard to understand?
News & Media
Probabilities are hard to understand.
News & Media
Their queasiness is hard to understand.
News & Media
The discrepancy is not hard to understand.
News & Media
It is hard to understand the puzzlement.
News & Media
I'm trying very hard to understand".
News & Media
What about that is hard to understand?
News & Media
He is so hard to understand.
News & Media
Expert writing Tips
Best practice
Use simple language and avoid jargon to prevent your writing from being "hard to understand".
Common error
Avoid stacking multiple clauses and convoluted phrasing. Break down complex ideas into shorter, more digestible sentences to prevent your message from becoming "hard to understand".
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "hard to understand" functions as an adjectival phrase, modifying a noun or pronoun by describing something that is difficult to comprehend. Ludwig AI confirms its grammatical correctness and usability across various contexts.
Frequent in
News & Media
75%
Academia
10%
Science
5%
Less common in
Formal & Business
3%
Encyclopedias
2%
Reference
1%
Ludwig's WRAP-UP
The phrase "hard to understand" is a common and grammatically sound way to express difficulty in comprehension. As confirmed by Ludwig AI, it's widely used across diverse contexts, from news and media to academic writing. While alternatives like "difficult to comprehend" or "challenging to fathom" can add variety, "hard to understand" remains a straightforward and effective choice. When using this phrase, ensure clarity by providing concrete examples and avoiding overly complex sentence structures.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
difficult to comprehend
Replaces "hard" with "difficult" and "understand" with "comprehend", maintaining similar meaning.
not easily understood
Expresses the difficulty in understanding using a passive construction.
tough to grasp
Uses "tough" instead of "hard" and "grasp" instead of "understand", offering a more informal tone.
challenging to fathom
Substitutes "hard" with "challenging" and "understand" with "fathom", suggesting a deeper level of difficulty.
beyond my comprehension
Indicates that something exceeds one's ability to understand.
incomprehensible
A single-word adjective meaning impossible to understand.
impenetrable
Suggests that something is impossible to understand or get through, like a barrier.
opaque
Uses "opaque" to describe something that is unclear and difficult to see through metaphorically, implying a lack of transparency in understanding.
murky
Suggests that something is unclear or confused, making it hard to understand, similar to a murky liquid.
arcane
Implies that something is mysterious or obscure, and therefore difficult to understand, often associated with specialized knowledge.
FAQs
What does "hard to understand" mean?
The phrase "hard to understand" means that something is difficult to comprehend or grasp. It indicates a lack of clarity or complexity that hinders understanding.
How can I use "hard to understand" in a sentence?
You can use "hard to understand" to describe anything that's difficult to comprehend. For example, "The instructions were "difficult to follow"" or "His accent was "difficult to understand"".
What can I say instead of "hard to understand"?
You can use alternatives like "difficult to comprehend", "tough to grasp", or "challenging to fathom" depending on the context.
Is it correct to say "hardly understandable"?
While "hardly understandable" is grammatically correct, it has a slightly different meaning. It means something is almost impossible to understand, whereas "hard to understand" simply implies it requires effort.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested