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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
invalidity
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word 'invalidity' is correct and usable in written English.
It refers to the state or quality of being invalid or lacking legal or logical validity. It can be used in various contexts, such as in legal documents, academic writing, or everyday conversations. Example: The court ruled that the contract was null and void, citing the invalidity of the signatures on the document. The research findings were questioned due to the potential invalidity of the data collection methods used. The disability insurance policy covers cases of partial or total invalidity caused by accidents or illnesses.
✓ Grammatically correct
News & Media
Encyclopedias
Science
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
An invalid marriage is not a special kind of marriage having the property of invalidity; it is not a marriage at all.
Science
By the time the pit finally closed down in 1993, putting the final 1900 workers on the dole, nearly 40% of the population of the village was on invalidity benefit – the highest of any community in the country.
News & Media
Mr Freud is proposing more carrot and more stick to move larger numbers of lone parents and 2.68 million people on invalidity benefit (IB) into the workforce.
News & Media
The agreement further provides €700m in funding to help people on invalidity benefit back to work.
News & Media
When she asked the commission for support, it was refused; she later had a nervous break-down, retiring on an invalidity pension at the age of 37. Almost three years passed before Michaele Schreyer, the budget commissioner, read one crucial memorandum on the goings-on at Eurostat.
News & Media
("I would suggest to you actually, as a historian, I may understand this better than lawyers," he told reporters last week in reference to his pronouncement of the invalidity of two hundred years of legal precedent establishing the power of courts to consider the constitutionality of laws).
News & Media
Incapacity benefit, paid to people too ill to work, was brought in to replace the widely abused invalidity benefit, whose recipients turned out to have included shot-putters and mountaineers.
News & Media
INSPIRED by the wartime programme of the National Resistance Council, the French welfare state was designed to "free workers from the uncertainty of tomorrow" by giving them publicly financed insurance against illness, joblessness, maternity, invalidity and old age.
News & Media
Tackling the impending pensions crisis by raising the retirement age will be even harder; as will reducing the vast invalidity benefits bill.
News & Media
But then he said "we all of us know" people in "genuine fear" about new medical tests brought in for people claiming invalidity benefits.
News & Media
Examples would be benefits linked to sickness, maternity, invalidity, accidents at work or unemployment.Essentially, the row centres on two disputes between Brussels and Whitehall, one very dull and one more interesting.
News & Media
Expert writing Tips
Best practice
When discussing legal or logical concepts, use "invalidity" to precisely denote the state of being without legal or logical force. It offers a more formal tone than alternatives like "wrongness" or "incorrectness".
Common error
Avoid using "invalidity" when referring to a physical or mental disability. "Invalidity" describes a legal or logical state, while "disability" refers to a condition affecting a person's capabilities.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
Invalidity primarily functions as a noun, denoting the state or condition of being invalid. It is used to describe situations where something lacks legal, logical, or factual validity. Ludwig indicates that "invalidity" is correctly used in various contexts.
Frequent in
News & Media
23%
Encyclopedias
22%
Science
21%
Less common in
Formal & Business
3%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The term "invalidity" is a noun that refers to the state of being invalid, lacking legal or logical validity. Ludwig AI confirms that the word is correct and usable in written English. It is frequently found in formal contexts such as legal documents, encyclopedias, and academic writing. When using "invalidity", ensure it accurately reflects the absence of validity rather than conditions like disability. Alternative expressions include "lack of validity" and "state of being void". Understanding its proper use and context is crucial for clear and precise communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
lack of validity
Focuses on the absence of a quality rather than the state itself.
state of being void
Emphasizes the condition of being without legal effect.
lack of legal force
Specifically highlights the absence of legal enforceability.
illegality
Highlights the contravention of law.
invalidation
Focuses on the act of making something invalid.
nullity
Similar to "void", emphasizing a complete lack of legal effect.
unenforceability
Stresses the inability to enforce a rule or agreement.
defectiveness
Implies a flaw that causes something to be invalid.
unsoundness
Highlights the lack of a solid or reasonable basis.
frailty
Emphasizes weakness and lack of resilience to legal challenges.
FAQs
How is "invalidity" used in legal contexts?
"Invalidity" in law typically refers to the state of a contract, patent, or other legal document being without legal force or effect. It often arises due to defects in formation, fraud, or /s/noncompliance with applicable laws.
What are some common causes of "invalidity" in contracts?
Common causes include misrepresentation, duress, undue influence, lack of capacity (e.g., being a minor), and /s/illegality of the subject matter.
What is the difference between "invalidity" and "illegality"?
"Invalidity" is a broader term that encompasses various reasons why something may lack legal force, whereas "illegality" specifically refers to the violation of a law. An illegal contract is always invalid, but an invalid contract is not necessarily illegal; it may simply be unenforceable due to other factors, such as /s/lack+of+consideration.
What can I say instead of "invalidity"?
Depending on the context, you can use alternatives like "lack of validity", "state of being void", or "lack of legal force".
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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
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested