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
either valid or invalid
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "either valid or invalid" is correct and usable in written English.
It can be used when discussing the status or classification of something, indicating that it can fall into one of two categories. Example: "The argument presented in the paper is either valid or invalid based on the evidence provided."
✓ Grammatically correct
Science
News & Media
Academia
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
1 human-written examples
The editing of a MSA is the application of a mask generated by the annotation of all sites as either valid or invalid.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
They're all equally valid or invalid, really.
News & Media
Every slight or criticism, real or imagined, valid or invalid, deliberate or accidental, sets these two ideologies off.
News & Media
This priming effect did not occur for any other valid or invalid inference that we tested, including the Disjunctive Syllogism.
Science
III, § 2, of the Maryland Constitution, apportioning seats in the Senate, was valid or invalid under the Equal Protection Clause.
Academia
With social media, it is now arguably easier for us to criticize each other to lodge a valid, or invalid, complaint in a public forum than ever before.
News & Media
They then check whether employees are reporting valid or invalid Social Security numbers and use the results to estimate the number of unauthorized immigrants across counties.
News & Media
"It's not up to me or anybody else who signed it to say the claim is valid or invalid or anything," he said.
News & Media
This chapter summarizes these results in an effort to determine whether the Internet and the World Wide Web are valid or invalid media for conducting research.
Analysis of column properties is the process of looking at individual, atomic values and determining whether they are valid or invalid.
They find in this case extraordinary features making it fitting in their judgment to determine whether the benefits and the taxes are valid or invalid.
Academia
Expert writing Tips
Best practice
Use "either valid or invalid" when you want to clearly present two mutually exclusive options regarding the acceptability or correctness of something, be it an argument, a claim, or data.
Common error
Avoid presenting situations as "either valid or invalid" when a spectrum of possibilities exists. Nuance is often necessary; consider alternatives like "partially valid" or "conditionally valid" where appropriate.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "either valid or invalid" functions as a disjunctive adjective phrase, offering two mutually exclusive classifications for a given subject. As Ludwig AI explains, it describes the status or classification of something, marking its acceptability or correctness. Ludwig AI examples confirm its use in diverse contexts.
Frequent in
Science
40%
News & Media
30%
Academia
30%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "either valid or invalid" is a grammatically sound and frequently employed expression used to classify entities into two distinct categories. Ludwig AI confirms its broad applicability. While versatile, it's essential to recognize situations where a more nuanced description may be more appropriate. Its prevalence across Science, News & Media, and Academia underscores its usefulness in both formal and informal settings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
either correct or incorrect
Focuses specifically on accuracy or factual correctness rather than broader validity.
either legitimate or illegitimate
Emphasizes the legitimacy or legal standing, rather than logical validity.
either true or false
Deals with truth values; a narrower scope than validity, especially in arguments.
either acceptable or unacceptable
Highlights the acceptance or rejection of something, often based on subjective criteria.
either right or wrong
Deals with moral or ethical considerations, contrasting with logical validity.
either confirmed or unconfirmed
Focuses on the confirmation status, rather than inherent validity.
either applicable or inapplicable
Concerns the relevance or applicability of something, not necessarily its validity.
either accurate or inaccurate
Relates to precision and correctness, differing from the broader concept of validity.
either functional or non-functional
Focuses on the operational state rather than validity.
either operative or inoperative
Concerns whether something is working or not, differing from logical or legal validity.
FAQs
How can I use "either valid or invalid" in a sentence?
You can use "either valid or invalid" to describe the status of an argument, a test result, or any situation with two possible outcomes. For instance, "The data from the experiment was deemed "either valid or invalid" after careful analysis."
What's a more formal way to say "either valid or invalid"?
In a more formal context, you might consider using "either legitimate or illegitimate" or "either acceptable or unacceptable" depending on the specific nuance you wish to convey.
Is it redundant to say "either valid or invalid"?
While it might seem redundant, using ""either valid or invalid"" emphasizes the binary nature of the classification, leaving no room for ambiguity.
What is the difference between something being "either valid or invalid" versus "either true or false"?
Validity typically applies to arguments or processes, indicating whether they follow logical rules. Truth, on the other hand, usually applies to statements or propositions, indicating whether they align with reality. An argument can be valid even if its premises are false, and a statement can be true even if it's part of an invalid argument.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested