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definitions

valid

[ val-id ]
/ ˈvæl ɪd /
||
SEE MORE SYNONYMS FOR valid ON THESAURUS.COM

adjective

sound; just; well-founded: a valid reason.
producing the desired result; effective: a valid antidote for gloom.
having force, weight, or cogency; authoritative.
legally sound, effective, or binding; having legal force: a valid contract.
Logic. (of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction.
Archaic. robust; well; healthy.

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RELATED WORDS

credible, good, well-founded, solid, authentic, accurate, persuasive, binding, legal, logical, compelling, legitimate, lawful, original, conclusive, true, authoritative, cogent, confirmed, convincing

Nearby words

  1. valhalla,
  2. valiance,
  3. valiancy,
  4. valiant,
  5. valiantly,
  6. validate,
  7. validation,
  8. validity,
  9. validly,
  10. valinda

Origin of valid

1565–75; < Latin validus strong, equivalent to val(ēre) to be strong + -idus -id4
Related forms
Can be confusedvalet valid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for valid

British Dictionary definitions for valid

valid

/ (ˈvælɪd) /

adjective

having some foundation; based on truth
legally acceptablea valid licence
  1. having legal force; effective
  2. having legal authority; binding
having some force or cogencya valid point in a debate
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 validCompare invalid 2 (def. 2)
archaic healthy or strong
Derived Formsvalidly, adverbvalidity (vəˈlɪdɪtɪ) or validness, noun

Word Origin for valid

C16: from Latin validus robust, from valēre to be 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
Word Origin and History for valid

valid

adj.

1570s, "having force in law, legally binding," from Middle French valide, from Latin validus "strong, effective," from valere "be strong" (see valiant). The meaning "supported by facts or authority" is first recorded 1640s.

Online Etymology Dictionary, © 2010 Douglas Harper