as in fragile
chronically or repeatedly suffering from poor health
an old and now invalid woman who rarely gets out anymore
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
1
as in null
having no legal or binding force
the treaty is invalid once one side violates it
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in erroneous
not being in agreement with what is true
that's an invalid assumption on your part
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in unreasonable
not using or following good reasoning
an argument which has one untrue premise is invalid
Synonyms & Similar Words
Antonyms & Near Antonyms
4
as in unsupported
having no basis in reason or fact
an invalid claim that can be easily disproved by the facts
Synonyms & Similar Words
Antonyms & Near Antonyms
as in to impair
Related Words
Dissimilar Words
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of invalid
ABC News,
25 June 2026
The original trial was found to be invalid due to fraud and deceit.
—
USA Today,
24 June 2026
Caroline Frost,
Deadline,
16 Mar. 2025
DeSantis's office has said all options are on the table for their fight, but a legal ruling invaliding the agreement that currently gives Disney near-total control of the district would be the easiest resolution for the governor's headache.
—
Jack Birle,
Washington Examiner,
8 Apr. 2023
See All Example Sentences for invalid
Adjective
The lawsuit, filed Thursday in federal court in Northern California, claims the tech giant’s private arbitration order barring her from speaking about the company or promoting her bestselling book is invalid.
—
ABC News,
25 June 2026
The original trial was found to be invalid due to fraud and deceit.
—
USA Today,
24 June 2026
Verb
If this is ascertained, the BBC quotes an LA attorney saying this would render Hackman’s will invalid, and mean his children could have a claim to the estate.
—
Caroline Frost,
Deadline,
16 Mar. 2025
DeSantis's office has said all options are on the table for their fight, but a legal ruling invaliding the agreement that currently gives Disney near-total control of the district would be the easiest resolution for the governor's headache.
—
Jack Birle,
Washington Examiner,
8 Apr. 2023
See All Example Sentences for invalid
Recent Examples of Synonyms for invalid
Adjective
-
The system has long been mired in controversy, including exam paper leaks and technical failures, placing a crushing burden on students, and financial strain on families investing everything in their children for a promise that can often appear fragile.
-
However, price bulls highlight a fragile US-Iran ceasefire and past IEA surplus forecasts that failed to depress prices.
Adjective
-
And since the Lightning have regularly been void of a first-round pick, they’re used to spending a lot of time waiting to make their selections.
-
The void being filled is not a very large one, either, Schaefer said, noting that only 2 percent of the flying public chose Spirit.
Adjective
-
In addition, the trial judge gave the jury erroneous instructions, the appeals court ruled.
-
But such fine evidence of the erroneous human touch in the publishing process is, of course, cherished by collectors of this day.
Adjective
-
If these requirements are not met, the search is unreasonable and therefore unlawful, and evidence obtained in that search cannot be used in court, barring a good-faith exception.
-
Justices ruled that sweeping use of cellphone data requires a warrant, a decision applying the Fourth Amendment, which protects against unreasonable searches and seizures, to new technology.
Adjective
-
Nseyo notes there are plenty of unsupported myths around what causes UTIs, so stick to these tips.
-
He is no longer charged with the capital offense of murder through the use of a firearm after Garnett dismissed it in January, finding the top count was legally unsupported by the other charges.
Verb
-
Aphasia impairs a person's ability to speak.
-
Additionally, poor gut health may impair nutrient absorption and increase systemic inflammation, which Sahaya notes can manifest externally on the skin.
Adjective
-
Following a year of historically weak hiring in 2025, hiring rebounded this spring.
-
In a weak free-agency class, centers Robert Williams III (Portland) and Mark Williams (Phoenix) are already off the market, each reportedly agreeing to return to their current teams.
Adjective
-
Released Parties are also not responsible for any incorrect or inaccurate information, whether caused by site users, tampering, hacking, or by any equipment or programming associated with or utilized in the Giveaway.
-
At the same time, The New York Times reported that Google’s AI Overviews produced incorrect answers roughly one in 10 times.
Cite this Entry
“Invalid.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/invalid. Accessed 3 Jul. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
