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Synonyms

valid

American  
[val-id] / ˈvæl ɪd /

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 British  
/ ˈvælɪd, vəˈlɪdɪtɪ /

adjective

  1. having some foundation; based on truth

  2. legally acceptable

    a valid licence

    1. having legal force; effective

    2. having legal authority; binding

  3. having some force or cogency

    a valid point in a debate

  4. 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

  5. archaic healthy or strong

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

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

Etymology

Origin of valid

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A notice taped outside one door says unauthorized entry is prohibited: “This includes all federal law enforcement personnel and activities unless authorized by lawful written direction from appropriate school officials or a valid court order.”

From Los Angeles Times

“If you’re committing a serious crime, deportation is a likely consequence and a valid consequence.”

From The Wall Street Journal

Only in Helsinki do teams hold a press conference about their ridiculously low scores, and since the skaters are in agreement—and willing to defy the judges—it seems valid.

From The Wall Street Journal

But with the rise of speculative or fake tickets, like the ones Balentine and Cottrell bought, securing valid tickets from the resale market has become more challenging.

From Los Angeles Times

It allows authorities to deny treaty benefits if offshore investment structures are deemed to be sham entities with little commercial substance - even when investors hold valid documentation.

From BBC