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 so
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that was so" is correct and can be used in written English.
It is typically used as a descriptive phrase to emphasize something that was particularly remarkable or extraordinary. Example: The sunset over the ocean was breathtaking, with hues of pink and orange painting the sky. That was so beautiful.
✓ Grammatically correct
News & Media
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
"Boy, that was so much fun".
News & Media
Oh that was so funny.
News & Media
That was so common".
News & Media
That was so strange.
News & Media
That was so naïve.
News & Media
"That was so tedious.
News & Media
"That was so disturbing.
News & Media
"That was so stressful.
News & Media
That was so plainly wrong.
News & Media
And that was so important.
News & Media
But that was so 2011.
News & Media
Expert writing Tips
Best practice
Use "that was so" to express strong feelings or opinions about a past event or experience. It is suitable for informal conversations and writing where emotional expression is desired.
Common error
Avoid using "that was so" in formal writing, such as academic papers or business reports. Opt for more precise and professional language to convey your message effectively.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that was so" functions as an exclamatory expression, typically used to emphasize the degree or intensity of an adjective or adverb. According to Ludwig AI, this phrase is considered grammatically correct and can be used in written English, commonly serving as a descriptive phrase.
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "that was so" is a common and grammatically correct phrase used to express strong emotions or opinions about past events. As confirmed by Ludwig AI, it functions as an exclamatory expression best suited for informal contexts, such as casual conversations and personal writing. While it is frequently found in news and media sources, it is advisable to avoid using "that was so" in formal or professional settings. Instead, consider using more precise language to ensure effective communication. Related phrases include "it was extremely" or "it truly was", which can convey similar sentiments with slight variations in emphasis.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it truly was
Emphasizes the authenticity and reality of the experience, replacing "so" with "truly".
it was quite
Replaces "so" with "quite" to soften the emphasis.
it was extremely
Focuses on the intensity of the experience, omitting the subject.
it really happened
Emphasizes the event's reality, removing "so" for a factual tone.
so it was
Emphasizes acceptance of past events.
that truly happened
Highlights the factual nature of the event, removing "so" and adjusting the sentence structure.
it happened like that
Focuses on the manner in which something occurred, simplifying the emotional expression.
it unfolded in that way
Emphasizes the process or sequence of events, removing the emotional intensity.
it transpired thus
Presents a formal and concise statement of how events unfolded.
that came to pass
Highlights the fulfillment of a prophecy or expectation, shifting the focus from the experience to the outcome.
FAQs
How can I use "that was so" in a sentence?
You can use "that was so" to express strong feelings about something in the past. For example, "The concert last night was incredible! "That was so" exciting".
What are some alternatives to "that was so"?
Depending on the context, you can use phrases like "it was extremely", "it truly was", or "it was quite" as alternatives to "that was so".
Is "that was so" grammatically correct?
Yes, "that was so" is grammatically correct and commonly used in spoken and informal written English to express a strong feeling or opinion about something that happened in the past.
In what contexts is it appropriate to use "that was so"?
"That was so" is appropriate in informal settings like conversations with friends or casual writing. However, it is generally best to avoid it in formal or professional contexts where more precise language is preferred.
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested