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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.

Mid and East Antrim Council said that "any property being sold or rented must have a valid Energy Performance Certificate, which reflects insulation and energy efficiency".

From BBC

In that sense, it is a valid input into the ultimate outcome that one should expect, depending upon the circumstances.

From Barron's

Selling at 99.7% of par signaled that the BDCs’ net asset values were valid and served as a proxy for the public fund’s loans.

From The Wall Street Journal

Charging fees to cross the strait would "lack a valid legal basis", Roscini said.

From Barron's

Three campaigns—including two funded by Building a Better California—are now offering signature collectors $15 for each valid signature.

From The Wall Street Journal