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 are not
Grammar usage guide and real-world examplesUSAGE SUMMARY
The part of the sentence "that are not" is correct and usable in written English.
You can use "that are not" in a sentence when you want to make a distinction between two things. Example: I like apples and oranges, but I'm not fond of other fruits that are not citrus.
✓ Grammatically correct
News & Media
Academia
Science
Wiki
Alternative expressions(4)
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
Discard any that are not.
News & Media
There are things that are not kosher".
News & Media
Those that are not are escaping poverty.
News & Media
"We are antipolicies that are not working".
News & Media
The prospects for that are not good.
News & Media
Stories like that are not uncommon".
News & Media
consignments that are not repetitive.
Proposed agreements that are not concluded.
Academia
transit lines that are not in use.
Academia
items that are not checked out.
Academia
§ 214.5 Decisions that are not appealable.
Academia
Expert writing Tips
Best practice
Use "that are not" to clearly define what is being excluded or does not meet a certain condition. Be precise in your selection of words to avoid ambiguity.
Common error
Avoid using "that are not" when referring to a singular noun. The correct form is "that is not". For example, instead of saying 'The book that are not on the table', say 'The book that is not on the table'.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that are not" functions as a relative clause, modifying a noun phrase by specifying a condition or characteristic that the noun does not possess. This is a common way to create distinctions and exceptions within a broader category. As per Ludwig AI's analysis, this is a correct and usable phrase.
Frequent in
News & Media
37%
Academia
36%
Wiki
15%
Less common in
Science
11%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "that are not" is a grammatically sound and frequently used relative clause that serves to exclude or differentiate items based on a specific condition. It is versatile, fitting into neutral registers and various contexts such as news, academic writing, and general discussions. According to Ludwig, its utility in creating distinctions is clear. When using the phrase, ensure subject-verb agreement and avoid applying it to singular nouns. Consider alternatives such as "which aren't" for informality or "that do not" for emphasis. This guide should equip you with a better understanding of when and how to effectively use "that are not" in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
which aren't
A contraction of "that are not", offering a more informal tone.
that do not
An alternative construction using "do not" which is slightly more emphatic.
which do not
An alternative construction using "do not" which is slightly more emphatic and formal.
that aren't
Contracted form of "that are not", suitable for informal contexts.
that fail to be
A more formal and emphatic way of expressing the same idea, often used in technical or legal contexts.
that have not
Shifts the focus to possession or experience, indicating a lack thereof.
that is not
Used when referring to a singular noun instead of a plural one.
that's not
Contracted form of "that is not", suitable for informal contexts and singular nouns.
non-
A prefix used to negate the following word. More concise, but only applicable in certain cases.
excluding those
Emphasizes the act of exclusion, suitable when specifically highlighting exceptions.
FAQs
How do I use "that are not" in a sentence?
Use "that are not" to specify a subset of items or conditions that do not possess a certain quality or characteristic. For example: "Discard any shells from the shellfish that are not open".
What's a more formal alternative to "that are not"?
For a more formal tone, consider using "that do not" or "which do not". These options can add emphasis or a more professional feel to your writing.
When should I use "that is not" instead of "that are not"?
Use "that is not" when referring to a singular noun or subject. "That are not" is exclusively for plural nouns. For example, "The policy that is not clear needs revision".
What are some common mistakes to avoid when using "that are not"?
Ensure subject-verb agreement. The phrase "that are not" must always refer to a plural subject. Avoid using it with singular subjects, which require "that is not".
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested