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 not
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that was not" is correct and usable in written English.
You can use it after a noun or verb to indicate that something is not true. For example: The statement she made was not accurate.
✓ Grammatically correct
News & Media
Alternative expressions(7)
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
Sorry, that was not correct.
News & Media
That was not easy.
News & Media
That was not surprising.
News & Media
"That was not ideal".
News & Media
That was not unusual.
News & Media
That was not weird.
News & Media
That was not exceptional.
News & Media
That was not funny.
News & Media
That was not deliberate.
News & Media
That was not open.
News & Media
That was not good.
News & Media
Expert writing Tips
Best practice
Use "that was not" to politely disagree or correct a statement. It provides a clear negation without being overly aggressive.
Common error
Avoid using "that was not" in overly complex sentences where a simpler negation would suffice. Clarity is key; ensure the negation directly relates to the intended subject.
Source & Trust
95%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "that was not" is to negate a statement or idea expressed in the past. As confirmed by Ludwig AI, it is used to indicate that something is incorrect, untrue, or did not occur as suggested. The phrase follows standard grammatical rules.
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Academia
0%
Ludwig's WRAP-UP
In summary, the phrase "that was not" is a very common and grammatically correct way to negate a statement or idea in the past. According to Ludwig AI, it's perfectly acceptable in written English. Predominantly found in news and media sources, it serves to correct inaccuracies or express disagreement. For alternative expressions, consider using "it wasn't" or "that is not", depending on the specific context and desired level of formality. When using "that was not", ensure the negation directly relates to the intended subject for maximum clarity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it wasn't
A contraction of "that was not", offering a more informal tone.
that wasn't
Contracted form indicating past negation, like "it wasn't".
that is not
Shifts the tense to the present, negating a current condition.
it did not
Changes the verb and tense, negating a past action.
that's not true
Directly contradicts a statement as being false.
that is incorrect
More formal way of saying something is not right.
that is false
Formally states a piece of information is untrue.
it's not the case
More elaborate way of saying something is not happening or is not true.
this is inaccurate
Similar to "that is incorrect" but refers to specific information.
that's simply not the case
Emphasizes that something is absolutely not true.
FAQs
How can I use "that was not" in a sentence?
Use "that was not" after stating something to clarify that it is incorrect or untrue. For example, "The information presented "that was not" accurate."
What can I say instead of "that was not"?
You can use alternatives like "it wasn't", "that is not", or "it did not" depending on the context.
Which is correct, "that was not" or "that weren't"?
"That was not" is correct when referring to a singular subject. "That weren't" is grammatically incorrect.
What's the difference between "that was not" and "that is not"?
"That was not" refers to something in the past, while "that is not" refers to something in the present.
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
95%
Authority and reliability
4.5/5
Expert rating
Real-world application tested