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
rule out
Grammar usage guide and real-world examplesUSAGE SUMMARY
"rule out" is an appropriate phrase in written English.
It usually means to exclude something from consideration or to deny something as a possibility. For example, you can use it in a sentence such as, "We must rule out any possibility of a data breach."
✓ 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
59 human-written examples
Don't rule out the possibility.
News & Media
"We never rule out anything".
News & Media
I wouldn't rule out demonstrations.
News & Media
You can't rule out anything".
News & Media
Do not rule out further progress here.
News & Media
Why should reductionists rule out this possibility?
Encyclopedias
Trump wouldn't rule out the idea.
News & Media
He did not rule out seeking I.M.F.
News & Media
He did not rule out a statue.
News & Media
He would not rule out a lawsuit.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
("SNOUT": SeNsitivity-rule OUT).
Wiki
Expert writing Tips
Best practice
When using "rule out", ensure the context clearly indicates what is being excluded and why. This avoids ambiguity and strengthens the clarity of your statement.
Common error
Avoid using "rule out" when you simply want to express uncertainty; instead, use it when you have specific reasons to exclude something as a possibility.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrasal verb "rule out" functions primarily as a verb of exclusion. It signifies the act of eliminating something from a set of possibilities or considerations. Ludwig AI confirms its use in rejecting options.
Frequent in
News & Media
44%
Science
34%
Wiki
15%
Less common in
Encyclopedias
2%
Formal & Business
1%
Reference
1%
Ludwig's WRAP-UP
In summary, the phrasal verb "rule out" is a common and grammatically sound way to express the exclusion of a possibility. Ludwig AI validates this, offering numerous examples across various domains. As shown by Ludwig, it appears frequently in news, science, and general reference contexts. When writing, ensure the context clearly defines what you are excluding. Remember that synonyms like "exclude" and "eliminate" can also effectively convey similar meanings, each with subtle differences in nuance. The key is clear and deliberate communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
exclude
Focuses on removing something from consideration.
eliminate
Suggests a more definitive removal of something.
dismiss
Implies a quick rejection of an idea or option.
reject
Directly expresses the refusal to accept something.
remove from consideration
A more formal way of saying to not consider something as an option.
preclude
Indicates something makes another thing impossible.
discount
Suggests reducing the importance or likelihood of something.
disregard
Implies ignoring something, often because it's irrelevant.
set aside
Means to ignore or postpone something, often temporarily.
write off
Suggests considering something as a failure or loss.
FAQs
How can I use "rule out" in a sentence?
The phrase "rule out" is used to eliminate a possibility. For example, you might say, "The doctor had to run tests to rule out any serious conditions".
What's an alternative to using "rule out"?
When is it appropriate to use "rule out" instead of "ignore"?
"Rule out" implies a reasoned rejection after consideration, while "ignore" suggests a lack of attention or deliberate overlooking. Use "rule out" when something has been considered but deemed impossible or irrelevant. For example, if a suspect has a solid alibi, the police can "rule out" that person; you do not ignore the person.
Is it incorrect to use "rule in" as an antonym of "rule out"?
While "rule in" is sometimes used as an antonym, it's less common. More precise antonyms might include "consider" or "allow". For example, instead of saying "We can't rule out that possibility, so we must rule it in", a better option is to say "We can't rule out that possibility, so we must consider it".
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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested