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
that's fascinating
Grammar usage guide and real-world examplesAlternative expressions(5)
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
On a much lighter note Björn Richie Lob's "Keep Surfing" is a look at a sports subculture — one that's fascinating, frivolous or both — that should be an audience favorite.
News & Media
And you must see the Free Town — that's fascinating.
News & Media
There's something about him as an artist that's fascinating.
News & Media
To me, that's fascinating, and I wanted to explore the mood swings, the moral fuzziness, of that world.
News & Media
"There's something that goes on on stage between the Body and the choir that's fascinating and unique.
News & Media
Indeed, it's the ingenuity of the men in the face of incredible odds and discomforts that's fascinating.
News & Media
"There's a clash between European and Latin American cultures that's fascinating".
News & Media
PAUL SIMON "The thing that's fascinating to me about duration of notes and rhythm is I listen to singers, great phrasers — the classic is Sinatra — it seems so completely natural that that's the way you would hear that song, but nobody else does it that way, and even the people who imitate him can't get it right.
News & Media
There's a lot that's fascinating about this story: from how the virus got into the relevant networks, to what it actually did when it got there, to how it was discovered (and whose fault that was) and the fact that no one in the United States or Israel has ever acknowledged its existence.
News & Media
It isn't so much the work that's fascinating to watch — it's the images of people who are going about their lives seemingly unaware that they're being watched (even if they doubtless assume the use of security cameras), and images, whether express or implicit, of Thierry and his colleagues watching those images and, for that matter, creating them.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
"I've never heard of a female to male detransition and I think that's fascinating you never hear it because they're so convincing as men.
News & Media
Expert writing Tips
Best practice
Use "that's fascinating" to express genuine interest and encourage the speaker to elaborate. It's a polite way to show you're engaged in the conversation.
Common error
Avoid using "that's fascinating" excessively in formal writing or presentations. Opt for more sophisticated synonyms like "remarkable" or "intriguing" to maintain a professional tone.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that's fascinating" primarily functions as an interjection or comment expressing the speaker's interest, curiosity, or captivation regarding a statement, fact, or situation. Ludwig examples showcase its use in response to new or surprising information.
Frequent in
News & Media
85%
Wiki
7%
Science
4%
Less common in
Formal & Business
2%
Academia
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "that's fascinating" is a commonly used phrase to express interest or captivation. It is grammatically correct and primarily found in news and media contexts, though it can be too informal for certain formal settings. According to Ludwig, alternative phrases like "that's interesting" or "that's intriguing" may be more appropriate in professional or academic environments. While perfectly valid and showing wide use, being mindful of the context, as exemplified by Ludwig, allows for more nuanced and effective communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that's interesting
Replaces "fascinating" with a more general term for interest.
that's intriguing
Substitutes "fascinating" with a word suggesting mystery or hidden interest.
that's remarkable
Replaces "fascinating" with a term emphasizing how noteworthy something is.
that's captivating
Changes "fascinating" to highlight the engaging or attention-grabbing quality.
how interesting
A more concise expression of interest.
that's quite a revelation
Indicates surprise and newfound understanding in addition to interest.
i find that very interesting
A more verbose way to express the same sentiment, adding a personal perspective.
that piques my interest
A more formal way of saying something sparks curiosity.
i find that thought-provoking
Replaces "fascinating" with emphasis on causing deep thinking or reflection.
that's news to me
Expresses surprise and interest in previously unknown information.
FAQs
What does "that's fascinating" mean?
The phrase "that's fascinating" is an expression used to convey that you find something very interesting or captivating. It implies a sense of wonder and curiosity about the subject at hand.
How can I use "that's fascinating" in a sentence?
You can use "that's fascinating" as a response to something someone has said or presented, indicating your interest. For instance, "I didn't know about the migratory patterns of monarch butterflies; "that's fascinating"!"
What can I say instead of "that's fascinating"?
You can use alternatives like "that's interesting", "that's intriguing", or "that's remarkable" depending on the context and the degree of your interest.
Is "that's fascinating" suitable for formal writing?
While "that's fascinating" is acceptable in spoken English and informal writing, it may be perceived as too casual for formal contexts. Consider using more sophisticated alternatives such as "that's remarkable" or "that's particularly noteworthy" to maintain a professional tone.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested