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 their assertion
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it was their assertion" is correct and usable in written English.
You can use it when referring to a claim or statement made by a group of people or individuals. Example: "During the debate, it was their assertion that climate change is primarily caused by human activity."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Central to Walt and Mearsheimer's hate-filled screed against Jewish participation in American politics was their assertion that it is perilous to speak out against Israel.
News & Media
What killed the program was their assertion that the taxpayers could no longer afford it.
News & Media
Instead, he reminded reporters that he ended his statement about Mr. Gore and the N.R.A. with the phrase "if I'm not mistaken," and told them it was their job to verify the assertion and Mr. Gore's responsibility to show that he was not a member of the group.
News & Media
Torture was their rebellion against the power of people with a kind of conscience that they did not share; it was an assertion of their dominance over that kind of thinking.
News & Media
It was an assertion of selfhood.
News & Media
Souza — a fierce critic of the current White House who has his own Trump-trolling photo book out in October — criticized the senators for rushing toward a vote on Kavanaugh's nomination "without an FBI investigation" into the alleged assault because of Trump's assertion it was "not their thing".
News & Media
It was an optimistic assertion.
News & Media
It was a blithe assertion that was simply untrue.
News & Media
Their discussion is as entertaining as it is edifying and their assertions are as sound as they are fantastical.
Academia
It is an assertion of values".
News & Media
"It is the assertion of a promise.
News & Media
Expert writing Tips
Best practice
When using "it was their assertion", ensure the context clearly identifies who "they" refers to, avoiding ambiguity for the reader.
Common error
Avoid attributing an assertion to a group without clear evidence that the entire group holds that view. Qualify the statement if only some members share the assertion.
Source & Trust
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it was their assertion" functions as a reporting clause, introducing a statement or claim made by a group. As Ludwig AI confirms, this phrase is grammatically correct. It sets the stage for presenting someone's viewpoint, argument, or declared belief, often paving the way for further analysis or counter-arguments.
Frequent in
News & Media
50%
Academia
25%
Science
25%
Less common in
Encyclopedias
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "it was their assertion" serves to introduce a statement or claim made by a group, typically in a neutral to formal register. As Ludwig AI confirms, the phrase is grammatically correct and suitable for various contexts. While not exceedingly common, it is frequently encountered in news reporting, academic writing, and scientific discourse. When using this phrase, clarity is paramount: ensure the referent of "they" is unambiguous. Alternative phrases, such as "they asserted" or "their claim was", can be used to vary the expression while maintaining a similar meaning.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they asserted
Directly states the act of asserting by the group, simplifying the original phrase.
their claim was
Replaces "assertion" with "claim", indicating a statement presented as true but potentially contestable.
their contention was
Uses "contention" to suggest a point argued for in a debate or disagreement.
they maintained that
Emphasizes the persistence of their statement or belief over time.
it was their position that
Highlights their stance or viewpoint on a particular matter.
their declaration was
Implies a formal or official statement of their belief or intention.
they posited that
Suggests that they put forward an idea or theory for consideration.
their argument was
Focuses on the reasoning and evidence they used to support their statement.
it was their thesis that
Specifically refers to their main argument or proposition, especially in academic context.
they professed that
Suggests an open admission or declaration of their belief.
FAQs
What does "it was their assertion" mean?
The phrase "it was their assertion" means that a group of people stated or claimed something as a fact or belief. It indicates the act of declaring something, often without providing conclusive proof.
How can I use "it was their assertion" in a sentence?
You can use "it was their assertion" when you want to report or discuss a claim made by a group. For example, "It was their assertion that the project would be completed on time, despite numerous delays."
What can I say instead of "it was their assertion"?
You can use alternatives like "they asserted", "their claim was", or "they maintained that", depending on the nuance you want to convey.
Is "it was their assertion" formal or informal?
"It was their assertion" is generally considered a neutral to slightly formal phrase, suitable for academic writing, news reporting, and professional communication. Simpler alternatives like "they said" are more informal.
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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
4.1/5
Expert rating
Real-world application tested