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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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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that is so

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "that is so" is correct and usable in written English.
It is typically used to express agreement, acceptance, or affirmation. For example, "I think this is the best solution." "That is so."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

DANA SPIOTTA: Candice, that is so lovely.

News & Media

The New Yorker

Her mother assures her that is so.

News & Media

The New York Times

Make another "V" that is so wide.

And that is so.

News & Media

The New York Times

"That is so him.

News & Media

Independent

That is so dumb.' ".

News & Media

The New York Times

"That is so sweet.

News & Media

The New Yorker

That is so over.

News & Media

The New York Times

That is so liberating.

That is so Coppola.

News & Media

The New Yorker

That is so wrong.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

Use "that is so" to express strong agreement or affirmation, ensuring it aligns with the tone of the conversation or writing.

Common error

Avoid overuse of "that is so" in formal writing, as it can sound too casual. Opt for more formal alternatives like "indeed" or "that is correct" to maintain a professional tone.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

89%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "that is so" functions primarily as an affirmative expression, confirming or validating a previous statement. As Ludwig AI indicates, it conveys agreement or acceptance. Examples show its use in direct responses to assertions, reinforcing their truth or accuracy.

Expression frequency: Very common

Frequent in

News & Media

70%

Wiki

15%

Formal & Business

5%

Less common in

Science

3%

Encyclopedias

2%

Academia

5%

Ludwig's WRAP-UP

In summary, the phrase "that is so" is a common and generally correct expression used to convey agreement or affirmation. As Ludwig AI confirms, it is widely used, primarily in news and media contexts, though leaning towards the informal side. While acceptable in many situations, remember to consider your audience and the overall tone of your writing, and consider using alternatives like "that's right" or "indeed" in more formal settings. Be mindful of overuse to maintain a professional tone.

FAQs

How can I use "that is so" in a sentence?

"That is so" is typically used to express agreement or strong affirmation. For example, if someone says, "This plan will definitely work", you could respond, "That is so".

What are some alternatives to saying "that is so"?

Depending on the context, you can use alternatives like "that's right", "exactly", or "I agree".

Is "that is so" considered formal or informal?

"That is so" leans towards the informal side. In formal settings, consider using more precise or formal language such as "that is correct" or "indeed".

When is it appropriate to use "that is so" in conversation?

It's appropriate to use "that is so" when you want to express strong agreement or affirmation in a casual or informal setting. Reserve it for scenarios where a slightly less formal tone is acceptable.

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Source & Trust

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Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: