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
they understood that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they understood that" is correct and usable in written English.
You can use it to indicate that a group of people has comprehended a particular idea or piece of information. Example: "After the meeting, they understood that the project deadline had been moved up."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
they realized that
they became aware that
they recognized that
they figured out that
they concluded that
they told that
they demonstrated that
they agreed that
they identified that
they learned that
they realised that
they described that
they recognised that
they appreciated that
they concurred that
they argued that
they inferred that
they determined that
it was communicated to them that
they were informed that
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
59 human-written examples
They understood that true inclusion means some effort and work.
News & Media
Once they met us they understood that were focused and had a vision for the business.
News & Media
They understood that they were wrong and still voted to override the veto.
News & Media
They understood that.
News & Media
They understood that we meant business.
News & Media
They understood that the world was evil.
News & Media
They understood that the plan was "workfare" only in name.
News & Media
They understood that Europe had not banished geopolitics.
News & Media
They understood that Turkey needed to be treated accordingly.
News & Media
"They understood that that was good for the game.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
I am not sure they understood that.
News & Media
Expert writing Tips
Best practice
Use "they understood that" to clearly convey that a group comprehended a concept or situation. Ensure the context provides enough information about who 'they' refers to and what 'they' understood.
Common error
Ensure the pronoun 'they' has a clear antecedent. Avoid using "they understood that" if it's unclear who 'they' are, as this can confuse the reader. Providing context to clearly describe the actors involved is helpful. Example: 'The scientists understood that the experiment had failed'.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they understood that" functions as a clause connector, linking a subject ('they') with their comprehension of a following idea or situation. As confirmed by Ludwig, it is a correct and usable phrase indicating comprehension. It introduces a subordinate clause that explains the object of their understanding.
Frequent in
News & Media
81%
Science
9%
Formal & Business
5%
Less common in
Academia
3%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "they understood that" is a grammatically sound and frequently used phrase that expresses comprehension on the part of a group. As confirmed by Ludwig, it's appropriate for various contexts, particularly in news and media, but can also be used in formal and scientific writing. The key is ensuring clarity in pronoun reference and selecting the most precise alternative, such as "they realized that" or "they grasped that", to capture the intended meaning. By avoiding ambiguity and utilizing best practices, writers can effectively employ this phrase to convey understanding and clarity in their communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
they realized that
Synonymous, but emphasizes the moment of understanding or becoming aware.
they recognized that
Highlights the act of identifying or acknowledging something previously known or suspected.
they grasped that
Indicates a firm understanding, often after some initial confusion.
they perceived that
Suggests understanding through observation or intuition.
they became aware that
Focuses on the process of gaining knowledge or understanding.
they figured out that
Implies a problem-solving aspect to the understanding.
they concluded that
Indicates understanding as a result of reasoning or deduction.
it dawned on them that
Emphasizes a sudden or unexpected realization.
they had the impression that
Suggests a less certain or more subjective understanding.
they were of the opinion that
Highlights a considered judgment or belief based on understanding.
FAQs
How can I use "they understood that" in a sentence?
Use "they understood that" to show that a group of people comprehended a situation or concept. For example: "After the explanation, "they understood that" the project was due sooner than expected."
What can I say instead of "they understood that"?
You can use alternatives like "they realized that", "they grasped that", or "they became aware that" depending on the specific nuance you want to convey.
Is it better to use "they understood that" or "they understood it"?
"They understood that" is typically followed by a clause explaining what was understood. "They understood it" is used when 'it' refers to something previously mentioned and clearly understood. Example: "We explained the problem, and "they understood it" immediately".
What's the difference between "they understood that" and "they assumed that"?
"They understood that" implies a correct comprehension of facts or a situation. "They assumed that" suggests a belief or supposition, which may or may not be accurate. Understanding is based on evidence, while assumption is based on a guess or belief.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested