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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
demonstrated their interest
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "demonstrated their interest" is correct and usable in written English.
You can use it when discussing someone's expression of curiosity or engagement in a particular subject, activity, or opportunity. Example: "The students demonstrated their interest in the new program by asking numerous questions during the presentation."
✓ Grammatically correct
News & Media
Science
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
"Consumers have demonstrated their interest in accessing entertainment through this new medium, and we intend to provide a secure, reliable and legitimate alternative,"says a spokesman for the venture.
News & Media
In the above-mentioned case, with quite limited interactivity, the citizens demonstrated their interest in the newly built up facility, it could be expected that even greater interest would emerge when the future development would be presented in the form of virtual immersive models with interactive user's interface.
The participants demonstrated their interest in playing a role in climate change adaptation by identifying at-risk patients and helping to tailor clinical care to better serve these individuals.
Science
While there are many potential behaviors to target to prevent childhood obesity, we highlight these four because there are clear age-appropriate guidelines about these behaviors from the AAP [ 22] and because focus groups with mothers demonstrated their interest and willingness to implement changes in these areas.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
In particular, if Galileo has been essentially driven by aeronautical actors, railways demonstrate their interest for this localization technology.
We also apply the methods to a flood model and a nuclear reactor pressurized vessel model, to practically demonstrate their interest on real industrial examples.
We as human beings are sorely in need of listeners--people who demonstrate their interest and care merely by listening without instruction, guidance and control.
News & Media
Fortunately, over two hundred leading advocates in this area demonstrated their strong interest in exploring greater collaboration among the religious freedom community by joining me recently at a summit co-sponsored by the Seventh-day Adventist church (for which I work) and the Newseum Institute's Religious Freedom Center in Washington, D.C.
News & Media
Participants demonstrated their strong interest in STEM by volunteering to participate in ASSIP and completing 300 h of summer research.
Science
In the 2004 election, these financial interests demonstrated their gratitude by contributing hundreds of thousands to the Bush-Cheney '04 campaign.
News & Media
Applicants shouldn't let their focus on demonstrating their STEM interest keep them from showing other facets of themselves.
News & Media
Expert writing Tips
Best practice
When employing "demonstrated their interest", ensure it's backed by specific actions or observable behaviors to strengthen the statement's credibility.
Common error
Avoid using "demonstrated their interest" vaguely. Instead of saying, "The company demonstrated their interest in sustainability", specify how: "The company demonstrated their interest in sustainability by investing in renewable energy sources".
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "demonstrated their interest" functions primarily as a verb phrase indicating that a subject has shown or revealed their curiosity, concern, or engagement in something. According to Ludwig AI, the phrase is usable in written English and commonly used to convey active engagement.
Frequent in
News & Media
37%
Science
33%
Formal & Business
10%
Less common in
Wiki
5%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "demonstrated their interest" is a grammatically sound and versatile phrase used to express that someone has actively shown engagement or concern in a particular subject. According to Ludwig AI, the phrase is suitable for use in written English. It is commonly employed in neutral to formal contexts, such as news and scientific publications, and supported by reputable sources like The New York Times and The Guardian. While "expressed their interest" is a useful alternative, remember that "demonstrated their interest" implies active involvement rather than mere verbal communication. When employing the phrase, ensure it is supported by specific actions or observable behaviors to enhance credibility.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
showed their enthusiasm
Replaces "interest" with a more active feeling, "enthusiasm".
displayed their curiosity
Focuses on inquisitiveness, swapping "interest" with "curiosity".
expressed their eagerness
Substitutes "demonstrated" with "expressed" and "interest" with "eagerness", highlighting anticipation.
revealed their passion
Emphasizes a strong feeling, replacing "interest" with "passion".
registered their support
Highlights backing or advocacy, replacing "interest" with "support".
exhibited their commitment
Highlights dedication, changing "interest" to "commitment".
indicated their concern
Replaces "interest" with "concern", focusing on worries or problems.
confirmed their participation
Focuses on active involvement, substituting "interest" with "participation".
signified their approval
Replaces "demonstrated their interest" with conveying positive feelings.
voiced their opinions
Expressing one's thoughts on a certain topic instead of showing general interest.
FAQs
How can I rephrase "demonstrated their interest" to sound more formal?
For a more formal tone, consider using phrases such as "expressed their interest", "indicated their commitment", or "registered their support". These alternatives /s/expressed+their+interest, /s/indicated+their+commitment, /s/registered+their+support convey a similar meaning with a heightened sense of professionalism.
What's a simple way to say someone "demonstrated their interest"?
You could say they "showed their interest" /s/showed+their+interest. This is a straightforward and commonly understood alternative.
Is it always necessary to follow "demonstrated their interest" with specific examples?
While not always mandatory, providing specific examples strengthens the claim and adds credibility. For instance, instead of saying "The students demonstrated their interest", specify how: "The students demonstrated their interest by actively participating in class discussions and completing extra credit assignments".
How does "demonstrated their interest" differ from "expressed their interest"?
"Demonstrated their interest" /s/demonstrated+their+interest typically implies action or behavior that showcases interest, while "expressed their interest" /s/expressed+their+interest suggests a verbal or written declaration. The former is more about observable actions, and the latter is about communication.
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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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested