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
were invalid
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "were invalid" is correct and usable in written English.
It can be used to indicate that something was not valid or acceptable in the past. Example: "The results of the experiment were invalid due to a lack of proper controls."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
were invalid.
News & Media
Debenedetti did send Borgonovo some numbers, but they were invalid.
News & Media
Endo said that Purdue's many patents on OxyContin were invalid.
News & Media
But Ms. Bloomfield said such considerations were invalid.
News & Media
Last August, a New Jersey court ruled those claims were invalid.
News & Media
Dr. Jalal won 171 votes, Mr. Nedai 89, and the remaining ballots were invalid.
News & Media
"These three members were never confirmed by the council, and therefore their appointments were invalid".
News & Media
In some cases one-quarter to one-half of the tests were invalid, the authorities said.
News & Media
Most important, the Court ruled that all actions taken by these recess appointees were invalid.
News & Media
"I was arguing that the tickets were invalid because they were defective".
News & Media
Bromberg also found that the decisions to refuse the two men were invalid.
News & Media
Expert writing Tips
Best practice
When using "were invalid", ensure the context clearly identifies what is being deemed invalid and the reason for its invalidity. For instance, "The test results were invalid due to contamination" provides clarity.
Common error
Avoid using "were invalid" without specifying why something was invalid. Vague statements like "The data were invalid" lack necessary context. Always provide supporting information or reasoning.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "were invalid" functions as a predicate adjective, modifying a noun (e.g., results, claims, votes) to indicate that they do not meet the required criteria for validity. Ludwig AI confirms its common usage in expressing that something lacks correctness or legal standing.
Frequent in
News & Media
39%
Science
30%
Encyclopedias
5%
Less common in
Wiki
3%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "were invalid" is a common and grammatically sound way to express that something lacks validity, correctness, or legal standing. As shown by Ludwig, it frequently appears in news, scientific articles, and encyclopedic content. When using "were invalid", it's crucial to provide context explaining the reason for the invalidity. Common alternatives include "were not valid" or, depending on the context, more specific terms like "were illegitimate" or "were ineffective". Ludwig AI confirms that this is a correct expression widely used in English.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
were not valid
Direct synonym; replaces "invalid" with its explicit definition.
were null and void
Emphasizes the lack of legal effect or enforceability.
were rendered void
Suggests a process or action that made something invalid.
were illegitimate
Indicates an improper or unlawful origin.
were not applicable
Highlights that something is not relevant or suitable for a specific case.
were unacceptable
Indicates that something did not meet required standards.
were ineffective
Focuses on the lack of desired outcome or impact.
were unfounded
Points to a lack of basis or justification.
were unsubstantiated
Suggests a lack of evidence to support something.
were unsustainable
Implies that something could not be maintained or supported.
FAQs
How can I use "were invalid" in a sentence?
The phrase "were invalid" is used to indicate that something was not acceptable or correct. For example, "The signatures on the petition "were invalid" because they were not properly verified".
What are some alternatives to saying "were invalid"?
Alternatives include phrases like "were not valid", "were null and void", or "were illegitimate", depending on the specific context.
Is it better to say "were invalid" or "were not valid"?
Both "were invalid" and "were not valid" are grammatically correct and often interchangeable. "Were invalid" is more concise, while "were not valid" may be preferred for emphasis or clarity in certain contexts.
What does it mean when something "were invalid" in a legal context?
In a legal context, "were invalid" typically means that something, such as a contract or a claim, had no legal force or effect. This might be because it violated a law, contained a fatal flaw, or was based on false information.
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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