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 is indeed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that is indeed" is correct and usable in written English.
It can be used to emphasize agreement or affirmation in a statement or observation. Example: "The results of the experiment were surprising, and that is indeed an understatement."
✓ Grammatically correct
News & Media
Science
Wiki
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
60 human-written examples
O.K., that is indeed a discrepancy.
News & Media
In today's biotech world, that is indeed the thinking.
News & Media
Those views reflect a partisan divide that is indeed gaping.
News & Media
Do we have a justice system that is indeed just?
News & Media
Apple Genius: "Yes sir, that is indeed Russian writing".
News & Media
That is indeed impressive.
News & Media
That is indeed positive.
News & Media
All that is indeed unacceptable.
News & Media
That is indeed what happened.
News & Media
If true, that is indeed tragic.
News & Media
That is indeed a shining hope.
News & Media
Expert writing Tips
Best practice
Use "that is indeed" to reinforce a point or to express agreement with a statement in a way that adds emphasis without being overly forceful.
Common error
Avoid using "that is indeed" too frequently in casual conversation or informal writing, as it can sound stilted or overly formal. Choose more natural alternatives like "that's right" or "exactly".
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that is indeed" functions as an affirmative interjection or adverbial phrase, used to express agreement or confirmation. Ludwig indicates its use in emphasizing a prior statement or observation, adding a layer of confirmation or validation.
Frequent in
News & Media
66%
Science
17%
Wiki
5%
Less common in
Formal & Business
2%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "that is indeed" is a grammatically sound and frequently employed phrase used to convey agreement and add emphasis to a statement. As per Ludwig's analysis, its usage spans across diverse contexts, particularly in news and media, science, and wiki sources. While adaptable, it leans towards a neutral to formal register, making it suitable for various communication styles. When writing, remember that "that is indeed" can also be expressed using a variety of phrases, like "that is certainly" or "that is absolutely", to make it less monotonous. However, overuse should be avoided, especially in casual conversation. Ludwig AI validates that it is correct.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that is certainly true
Emphasizes the truthfulness of a statement more directly.
that is absolutely correct
Adds a stronger degree of affirmation and correctness.
that is most assuredly
Uses a more formal and emphatic tone.
that's undeniably the case
Highlights the undeniable nature of the situation.
that is definitely so
Indicates a firm agreement with a preceding statement.
that is quite right
Conveys agreement with a polite and somewhat formal tone.
that is without a doubt
Expresses certainty and leaves no room for questioning.
that is clearly the situation
Emphasizes the clarity and obviousness of the situation.
that much is true
Confirms the truth of a particular aspect or statement.
that is so true
Similar meaning, but with a slightly less formal tone.
FAQs
What does "that is indeed" mean?
The phrase "that is indeed" is used to express agreement or affirmation, often adding emphasis to the statement being agreed with. It conveys a sense of confirmation or acknowledgment.
How can I use "that is indeed" in a sentence?
You can use "that is indeed" to affirm a statement made by someone else or to emphasize a point you are making. For example, "The project was a success, and that is indeed a testament to the team's hard work."
What are some alternatives to "that is indeed"?
Alternatives to "that is indeed" include "that is certainly", "that is absolutely", "that is correct", or simply "indeed" depending on the context.
Is "that is indeed" formal or informal?
While "that is indeed" can be used in both formal and informal settings, it often carries a slightly more formal tone compared to phrases like "that's right" or "exactly". Choose the phrase that best fits the overall tone of your 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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested