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 that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that is that" is correct and can be used in written English.
It is usually used to express finality or conclusion. For example, "We have considered all of the options and that is that."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
it is settled
it's a done deal
case closed
the end of the matter
so be it
that's final
the die is cast
it is what it is
that describes that
that generates that
that incorporates that
that right that
that exists that
that information that
that recommendations that
which represent that
that settles that
Is it true that
the suggestion that
the findings that
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
45 human-written examples
"There is nothing that is that unique".
News & Media
Name another firm that is that unconventional.
News & Media
That is that answered then.
News & Media
And that is that is incredibly useful.
So that is that, well done Portsmouth.
News & Media
That is that is our bright future.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
15 human-written examples
When he did, that was that".
News & Media
"That's that world, folks".
News & Media
"That was that," he recalls.
News & Media
"That's that Indian self-sacrifice".
News & Media
That was that: friends for life.
News & Media
Expert writing Tips
Best practice
Use "that is that" to clearly signal the end of a discussion or argument, leaving no room for further debate.
Common error
Avoid using "that is that" repeatedly in a short span, as it can sound repetitive and dismissive. Opt for varied expressions to convey finality.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that is that" functions as an idiomatic expression used to express finality, conclusion, or the end of a matter. Ludwig AI confirms this usage in various contexts.
Frequent in
News & Media
50%
Academia
25%
Science
25%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "that is that" is a common idiomatic expression used to convey finality or the end of a discussion. Ludwig AI analysis confirms its grammatical correctness and wide usage across various contexts, including news, academia, and general conversation. While versatile, it's important to use it judiciously to avoid sounding repetitive or dismissive. Consider alternatives like "it is settled" or "case closed" to add variety to your writing. Remember to be mindful of the tone when using "that is that" as it may occasionally come across as harsh, depending on the situation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it is settled
Implies a decision has been made and is no longer open for discussion.
it's a done deal
Suggests that an agreement or arrangement is complete and irreversible.
the end of the matter
Emphasizes that the issue is resolved and requires no further attention.
case closed
Indicates that the discussion or investigation is complete.
so be it
Expresses acceptance of a situation, often with a sense of resignation.
that's final
Highlights the decisiveness and unchangeable nature of a decision.
there's no more to say
Indicates that further discussion is unnecessary or unproductive.
the die is cast
Suggests that a decision has been made with irreversible consequences.
it is what it is
Accepts a situation without necessarily implying a decision has been made.
that's the bottom line
Highlights the most important point or conclusion.
FAQs
How can I use "that is that" in a sentence?
You can use "that is that" to indicate the end of a discussion or decision, such as: "We've reviewed the budget, and "that is that"; there will be no further increases."
What does "that is that" mean?
"That is that" signifies that a matter is concluded, final, or settled. It often implies there is no room for further discussion or negotiation.
Are there alternatives to using "that is that"?
Yes, you can use alternatives like "it is settled", "it's a done deal", or "case closed" depending on the context.
When is it appropriate to use "that is that"?
It's appropriate to use "that is that" when you want to clearly communicate that a decision is final and not open for discussion. However, be mindful of the tone, as it can sometimes sound dismissive.
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested