valid

[val-id]

adjective

1. sound; just; well-founded.

   a valid reason.

2. producing the desired result; effective.

   a valid antidote for gloom.

3. having force, weight, or cogency; authoritative.

   Synonyms: cogent, substantial

4. legally sound, effective, or binding; having legal force.

   a valid contract.

5. Logic.,  (of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction.

   Synonyms: convincing, logical

6. Archaic.,  robust; well; healthy.

valid

/ ˈvælɪd, vəˈlɪdɪtɪ /

adjective

1. having some foundation; based on truth

2. legally acceptable

   a valid licence

3. 1. having legal force; effective

   2. having legal authority; binding

4. having some force or cogency

   a valid point in a debate

5. logic (of an inference or argument) having premises and conclusion so related that whenever the former are true the latter must also be true, esp ( formally valid ) when the inference is justified by the form of the premises and conclusion alone. Thus Tom is a bachelor; therefore Tom is unmarried is valid but not formally so, while today is hot and dry; therefore today is hot is formally valid Compare invalid 2

6. archaic,  healthy or strong

Other Word Forms

• validity noun
• validly adverb
• validness noun
• nonvalid adjective
• nonvalidly adverb
• nonvalidness noun
• prevalid adjective
• prevalidly adverb
• quasi-valid adjective
• quasi-validly adverb

Word History and Origins

Origin of valid¹

First recorded in 1565–75; from Latin validus “strong,” from val(ēre) “to be strong” + -idus -id ⁴; prevail ( def. )

Word History and Origins

Origin of valid¹

C16: from Latin validus robust, from valēre to be strong

Example Sentences

This is also leading with the argument, valid and honest, for the series’ strongest point.

From Salon

Coldplay said all tickets will remain valid for their rescheduled date and fans can use existing tickets.

From BBC

“The most serious consequences are if you’re going to end up with indictments that are not valid because they weren’t signed by a lawful U.S. attorney.”

From Los Angeles Times

US citizens and green card holders are exempt, and valid visa-holders will still be allowed to own one primary residence.

From BBC

The findings show “their complaints are real and valid, and need to be listened to,” he said.

From Los Angeles Times

Related Words

• accurate 
• authentic 
• binding 
• compelling 
• conclusive 
• credible 
• good 
• lawful 
• legal 
• legitimate 
• logical 
• original 
• persuasive 
• solid 
• true 
• well-founded