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
it was known
Grammar usage guide and real-world examplesUSAGE SUMMARY
"it was known" is a grammatically correct and commonly used phrase in written English.
It is typically used to convey that something was already known or understood by someone or a group of people. Example: After years of research, it was known that certain foods could increase brain function.
✓ Grammatically correct
News & Media
Encyclopedias
Academia
Alternative expressions(20)
it was understood
it was recognized
it was established
it was acknowledged
it was no secret
it was revealed
it was furnished
research indicated
this demonstrates
it was exercised
it was diminished
the analysis revealed
it was inventoried
it was proven
the data suggests
it was demonstrated
findings suggest
it was shortened
it was suggested
it was forwarded
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 was known for its brutality and barbaric medical experiments.
Wiki
It was known that they could count.
News & Media
That's how it was known in antiquity.
Academia
In Germany it was known as Pranger.
Encyclopedias
It was known as the "sin bin".
News & Media
It was known as the Poulson affair.
News & Media
It was known to be Soviet propaganda.
News & Media
It was known as Au Panier Fleuri.
News & Media
It was known as the Holy Ground.
News & Media
It was known as Everyman's Library.
News & Media
It was known to the Metropolitan police.
News & Media
Expert writing Tips
Best practice
Use "it was known" to establish shared understanding or background information before introducing new details or arguments.
Common error
Avoid relying too heavily on passive constructions like "it was known", as excessive use can make your writing sound indirect and weaken its impact. Consider using active voice where appropriate for a more direct and engaging style.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
It was known" functions as a passive construction indicating a state of prior awareness or understanding. According to Ludwig AI, this phrase conveys that something was already established or understood. Examples from Ludwig illustrate its use in various contexts to introduce background information.
Frequent in
News & Media
58%
Encyclopedias
18%
Academia
12%
Less common in
Wiki
8%
Formal & Business
0%
Science
4%
Ludwig's WRAP-UP
In summary, "it was known" is a grammatically correct and frequently used phrase that serves to establish shared understanding or provide context by referencing prior knowledge. Ludwig AI confirms its proper usage. It is versatile across various contexts, particularly in news, encyclopedias and academia, but writers should avoid overuse of passive voice to maintain a direct writing style. Alternatives include "it was understood" or "it was recognized", depending on the nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it was recognized
Replaces "known" with "recognized", emphasizing acknowledgment.
it was understood
Substitutes "known" with "understood", highlighting comprehension.
it was established
Replaces "known" with "established", suggesting confirmation.
it was acknowledged
Substitutes "known" with "acknowledged", implying acceptance.
it had been known
Adds a sense of duration to the knowledge.
it was public knowledge
Emphasizes the widespread awareness of the information.
it was common knowledge
Highlights that the information was generally known.
people knew
Simplifies the sentence structure while maintaining the core meaning.
everyone was aware
Focuses on the widespread awareness of the information.
it was no secret
Indicates that the information was not concealed.
FAQs
How can I use "it was known" in a sentence?
The phrase "it was known" is typically used to indicate that something was previously established or understood. For example, "it was known that the experiment had risks, but we proceeded anyway."
What are some alternatives to "it was known"?
Alternatives include "it was understood", "it was recognized", or "it was established", depending on the specific nuance you want to convey.
Is it better to say "it was known" or "people knew"?
The choice depends on the context. "It was known" is more formal and impersonal, while "people knew" is more direct and personal. Use "it was known" when the focus is on the information itself, rather than the people who knew it.
What is the difference between "it was known" and "it is known"?
"It was known" refers to something that was known in the past but may or may not be currently known. "It is known" refers to something that is currently known.
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