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

Derived Forms

• validity, noun
• ˈvalidly, adverb

Other Words From

• valid·ly adverb
• valid·ness noun
• non·valid adjective
• non·valid·ly adverb
• non·valid·ness noun
• pre·valid adjective
• pre·valid·ly adverb
• quasi-valid adjective
• quasi-valid·ly 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

She had previously served on the Bell Gardens City Council until 2019, when a Los Angeles Superior Court judge found she had violated her duties by neglecting to attend meetings for at least 60 consecutive days on two occasions without a valid reason.

From Los Angeles Times

The UK government made it a criminal offence to possess a bully XL without a valid certificate of exemption from February 2024, following a spate of attacks.

From BBC

Ofqual said it had had to take "unprecedented" action against the exam board, NCFE, to get 1,200 students' results recalculated, after it failed to develop "valid question papers".

From BBC

A man still holds a valid driving licence despite having 229 penalty points, figures show.

From BBC

While the authors argue that spacetime coordinates are matrices, Minic said “I do not see any deep consequences of that statement! What happens to quantum correlations in that matrix valued spacetime? Do they satisfy the quantum Bell bound? How is the quantum probability computed? Is the Born rule still valid? Are there any new testable predictions?”

From Salon

Related Words

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