valid
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/ˈvælɪd/
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A quality of being logically sound, legally binding, or meeting required standards, and therefore acceptable for use.
Examples
The survey response is valid if the participant answered honestly.
A valid trademark protects the brand from infringement.
Make sure your password is valid before you submit the form.
You must present a valid driver's license to rent a car.
The election results are valid only if the counting process was transparent.
Similar words
recognised
proper
authorized
official
admissible
recognised
well-founded
lawful
legitimate
reasonable
Meanings
Examples
The proof is valid, showing the theorem holds under the given assumptions.
A valid syllogism cannot have a false conclusion if its premises are true.
The software checks whether the input is valid before processing it.
Only a valid inference can be used in a formal debate.
The contract includes a clause that makes the agreement valid only after signatures.
The test results are valid if the experiment follows the protocol.
A valid password must contain at least eight characters.
Examples
The judge declared the marriage valid under the new law.
A valid trademark protects the brand from infringement.
The court ruled that the patent was valid and enforceable.
You must present a valid driver's license to rent a car.
The election results are valid only if the counting process was transparent.
A valid deed transfers ownership of the property.
The settlement agreement is valid after both parties sign.
Similar words
binding
enforceable
lawful
authorized
official
recognised
legitimate
authorized
Examples
Your ticket is valid until midnight.
Make sure your password is valid before you submit the form.
The coupon is valid only on weekends.
A valid email address contains an @ symbol.
The membership card is valid for one year.
The survey response is valid if the participant answered honestly.
The software will reject any valid input that exceeds the limit.
Similar words
acceptable
usable
legitimate
proper
appropriateadmissible
authorized
recognised
Etymology
From Latin validus, meaning strong or effective.
FAQ
What does valid mean in logic?
In logic, valid means the conclusion follows necessarily from the premises.
When is a contract considered valid?
A contract is valid when it meets all legal requirements such as offer, acceptance, consideration, and capacity.
How can I tell if my password is valid?
A password is valid if it satisfies the system's rules, such as length, character types, and no prohibited words.
Is a valid ticket the same as a legitimate ticket?
A valid ticket meets the required conditions for entry, while legitimate often refers to moral or legal rightfulness.
What is the origin of the word valid?
It comes from Latin validus, meaning strong or effective.
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