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 was fascinating
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that was fascinating" is correct and usable in written English.
You can use it to express that something you experienced or learned was interesting or captivating. Example: "After the lecture on ancient civilizations, I turned to my friend and said, 'That was fascinating!'"
✓ Grammatically correct
News & Media
Alternative expressions(18)
that was intriguing
that was remarkable
that is fascinating
that piqued my interest
that held my attention
that was fantastic
it was unbelievable
that was impressive
that was amazing
that was surprising
that was stunning
that was magnificent
that was noteworthy
that was astounding
that was terrific
that's amazing
that was astonishing
that was incredible
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
35 human-written examples
For artists painting sea battles in the Regency period, that was fascinating advice.
News & Media
"It's almost like going back to old-school naturalism," Betchkal said, "where you paid attention to anything and everything that was fascinating.
News & Media
She was older than me, she was different, dark, sophisticated, 'in the world' in a way that was fascinating," she says.
News & Media
Thinking about the young Steichen, she said: "I could imagine this impassioned youth: moody, delightful, energetic, leaping into anything that was fascinating and new.
News & Media
Jenny Uglow's The Lunar Men, for example, that was fascinating – and didn't it feel terribly modern to have Watt, Wedgwood and Priestly all in the same "biography".
News & Media
What he discovered was an origin story that was fascinating and heartwarming enough to become a segment on This American Life; I won't spoil it for you.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
25 human-written examples
And you must see the Free Town — that's fascinating.
News & Media
"It's not fascinating reading, but stuff is in there that is fascinating".
News & Media
It's that change and the effects of that change that are fascinating to me".
News & Media
There's something about him as an artist that's fascinating.
News & Media
"There's a clash between European and Latin American cultures that's fascinating".
News & Media
Expert writing Tips
Best practice
Use "that was fascinating" to express genuine surprise or captivation. It's effective in conveying a strong positive reaction to something you've learned or experienced.
Common error
While "that was fascinating" is generally acceptable, avoid overusing it in highly formal or academic writing. Opt for more sophisticated synonyms like "that was particularly insightful" or "that proved to be quite enlightening" to maintain a professional tone.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that was fascinating" functions as an exclamatory remark expressing the speaker's strong interest or captivation. As supported by Ludwig, it's a direct way to communicate that something was particularly engaging or thought-provoking. The examples show it used after hearing stories or witnessing events.
Frequent in
News & Media
97%
Science
1%
Wiki
1%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "that was fascinating" is a grammatically sound and widely understood phrase used to express genuine interest and captivation. Ludwig AI confirms its acceptability in written English. While its register is generally neutral, it's advisable to use more formal synonyms in highly academic or professional contexts. Predominantly found in news and media sources, the phrase effectively conveys a speaker's positive reaction to information, events, or performances. As shown by Ludwig, it's a versatile expression that communicates intrigue and appreciation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that was intriguing
Replaces "fascinating" with "intriguing", suggesting something that aroused curiosity or interest.
that was captivating
Replaces "fascinating" with "captivating", emphasizing the ability to hold one's attention.
that was absorbing
Replaces "fascinating" with "absorbing", highlighting the ability to completely engage one's attention.
that was compelling
Replaces "fascinating" with "compelling", indicating a strong ability to evoke interest.
that was quite interesting
Adds the qualifier "quite", softening the intensity of the interest expressed.
i found that fascinating
Changes from a statement to a personal declaration of finding something fascinating.
that was remarkable
Shifts the focus to the noteworthy or exceptional nature of something.
that piqued my interest
Indicates that something stimulated or aroused interest.
that held my attention
Focuses on the ability of something to keep one's attention engaged.
that was thought-provoking
Emphasizes the ability of something to stimulate thought or reflection.
FAQs
How can I use "that was fascinating" in a sentence?
You can use "that was fascinating" to express genuine interest after hearing a story, learning a fact, or experiencing something new. For example, "After the presentation, I thought, '"that was fascinating"!"'
What are some alternatives to "that was fascinating"?
Alternatives include "that was intriguing", "that was captivating", or "that was remarkable", depending on the specific nuance you want to convey.
Is it appropriate to use "that was fascinating" in formal writing?
While generally acceptable, using more formal alternatives like "that was insightful" or "that proved to be enlightening" may be more suitable for academic or professional contexts.
What's the difference between "that was fascinating" and "that is fascinating"?
"That was fascinating" refers to something that occurred in the past, while "that is fascinating" refers to something that is currently occurring or is a general truth. For example, "The lecture yesterday "that was fascinating"," versus, "Quantum physics "that is fascinating"".
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
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested