valid
/văl′ĭd/
adjective
  1. Well grounded; just.
    a valid objection.
  2. Producing the desired results; efficacious.
    valid methods.
  3. Having legal force; effective or binding.
    a valid title.
from The American Heritage® Dictionary of the English Language, 5th Edition. More at Wordnik
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Merriam-Webster
merriam-webster.com › dictionary › valid
VALID Definition & Meaning - Merriam-Webster
2026 Croix Bethune’s midfield magic Concerns about the Current’s depth in the defensive midfield appear to be valid. —Daniel Sperry, Kansas City Star, 12 Mar. 2026 Consider trying to settle the account If the underlying debt is legitimate and the judgment is valid, one way to get rid of the issue may be to negotiate with the creditor to settle the account. —Angelica Leicht, CBS News, 12 Mar. 2026 See All Example Sentences for valid
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University of Hawaii
www2.hawaii.edu › ~pine › logicweb › Phil110 › Phil110 › validsup.htm
More Valid and Invalid Examples:
If the premises are true, would we be locked in to accepting the conclusion?" If the answer is "yes," then the argument is valid. If the answer is "no," then the argument is invalid. Remember that both examples on page 20 are valid, even though it is not true that Sandy Beach is south of Kona, etc.
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Dictionary.com
dictionary.com › browse › valid
VALID Definition & Meaning | Dictionary.com
Under Alberta's Referendum Act, organisers must collect 177,732 valid signatures by May for a referendum question to be verified and potentially approved. ... Travel agents for an official ticketing booth in Beijing told AFP on Tuesday that anyone with a valid visa can now buy train tickets to the North.
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Cambridge Dictionary
dictionary.cambridge.org › us › example › english › valid
VALID example sentences | Cambridge Dictionary
This correction is valid as long as the thickness to be traversed is not so long as to dissipate the shock wave. ... In designing tasks, researchers need to worry about establishing reliable and valid measures.
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Vocabulary.com
vocabulary.com › dictionary › valid
Valid - Definition, Meaning & Synonyms | Vocabulary.com
Something is valid when it can be supported or backed-up, or if it is functional: “She figured her password was valid because she had just set it.” In a legal context, valid means that something is binding or actionable: “At the time of ...
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Thesaurus.com
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VALID Synonyms & Antonyms - 124 words | Thesaurus.com
Words related to valid are not direct synonyms, but are associated with the word valid. Browse related words to learn more about word associations. accurate analytical analytic/analytical authentic cogent confirmed convincing credible defensible effectual effective established factual forcible genuine good good faith honest-to-goodness ineradicable irradicable justifiable lawful legal legit logical meaningful ministerial more analytic more accurate more analytical more analytical more credible more effective more meaningful more reasonable more telling more solid more stringent more significan
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Collins Dictionary
collinsdictionary.com › us › sentences › english › valid
Examples of 'VALID' in a sentence | Collins English ...
We welcome feedback: report an example sentence to the Collins team. Read more… · The furious five undeniably have a valid point. ... Tickets are valid over all weekends and include half-term.
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Runestone Academy
runestone.academy › ns › books › published › DiscreteMathText › arguments2-3.html
Valid and Invalid Arguments
Use a truth-table to determine if the following argument is valid or invalid. ... Although the two statements are false, the argument is still valid. It has the form of Example 2.3.3, which we determined was valid.
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YourDictionary
sentence.yourdictionary.com › home › valid
Examples of "Valid" in a Sentence | YourDictionary.com
This reveals the empiricist temper, and points to an attempted empiricist solution of great problems. Butler holds that more ambitious philosophies are valid, but he shrinks from their use. ... An unbaptized person is also incapable of valid ordination.
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Collins Dictionary
collinsdictionary.com › us › dictionary › english › valid
VALID definition in American English | Collins English Dictionary
We welcome feedback: report an example sentence to the Collins team. Read more… On the windscreen was a tax disc valid until end of this month. The Guardian (2015)That line is no longer valid.
Published   March 26, 2018
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Cambridge Dictionary
dictionary.cambridge.org › us › dictionary › english › valid
VALID | definition in the Cambridge English Dictionary
But under the bill, those non-resident ... be valid in the license-holder's home state. ... An equally valid list could also be produced of the advantages of traveling when young. ... A postmark denotes when the post office receives the letter and is used to determine whether late ballots are valid. ... B-1 visas are relatively easy to get, and can be valid for as long as 10 years. ... These examples are from corpora ...
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Wikipedia
en.wikipedia.org › wiki › Validity_(logic)
Validity (logic) - Wikipedia
January 31, 2026 - Formal arguments that are invalid are often associated with at least one fallacy which should be verifiable. A standard view is that whether an argument is valid is a matter of the argument's logical form. Many techniques are employed by logicians to represent an argument's logical form. A simple example, applied to two of the above illustrations, is the following: Let the letters 'P', 'Q', and 'S' stand, respectively, for the set of men, the set of mortals, and Socrates.
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Thinking LSAT
thinkinglsat.com › articles › valid-and-invalid-arguments
Logical Reasoning Tips: Valid and Invalid Arguments - Thinking LSAT
February 27, 2022 - Each of the arguments above is valid because the truth of its premises guarantees the truth of its conclusion. ‍ Of course, in the second example above, the premises are false. But that doesn’t mean it’s an invalid argument. On the LSAT, your job isn’t to argue with the premises.
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University of Hawaii
www2.hawaii.edu › ~pine › logicweb › tutorials › V-I-Arguments › V-I-Arguments.html
Valid and Invalid Deductive Arguments
So, Wen Ho Lee is an Internet spy for the Chinese government. ANSWER · Question: What if we discover that the conclusion is true? Is the argument now valid? ANSWER · All Democrats always tell the truth. President Obama is a democrat. So, President Obama always tells the truth. ANSWER · Question: What if the conclusion of the Obama example is false?
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Longman
ldoceonline.com › dictionary › valid
valid | meaning of valid in Longman Dictionary of Contemporary English | LDOCE
Word family (noun) validity ≠ ... (=based on correct numbers or good research)The drug trials were scientifically valid.Examples from the Corpusvalid• He says they can even zoom in on tax discs to see if they're valid.• It is obvious that students should not believe ...
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Teachable
criticalthinkeracademy.teachable.com › courses › 76303 › lectures › 1105072
3. Valid versus Invalid Arguments | The Critical Thinker Academy
We've seen valid arguments before. Recall the Tom Cruise argument: 1. All actors are robots. 2. Tom Cruise is an actor. Therefore, Tom Cruise is a robot. This is an example of a valid argument.
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Philosophyexperiments
philosophyexperiments.com › validorinvalid › Default.aspx
Valid or Invalid? - A Test of Logic
Thus, the argument above is valid, because if all humans are mortal, and if all Greeks are human, it follows as a matter of logical necessity that all Greeks are mortal. It is important to stress that this kind of logical entailment has nothing to do with the truth of the premises or conclusion. It is only about working out whether the conclusion necessarily follows from the premises. This is really all the information you need to take the test.
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YourDictionary
yourdictionary.com › home › dictionary meanings › valid definition
Valid Definition & Meaning | YourDictionary
This with the extracts from her letters, scattered through the report, is the first valid source of information about Helen Keller.
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Internet Encyclopedia of Philosophy
iep.utm.edu › val-snd
Validity and Soundness | Internet Encyclopedia of Philosophy
Because they have this form, the examples above are valid. However, the first example is sound while the second is unsound, because its premises are false. Now consider: All basketballs are round. The Earth is round. Therefore, the Earth is a basketball. All popes reside at the Vatican. John Paul II resides at the Vatican. Therefore, John Paul II is a pope. ... All A’s are F; X is F; Therefore, X is an A. Arguments with this form are invalid.