有効な定義と意味 | Dictionary.com

VALID Definition & Meaning | Dictionary.com Synonyms valid American [ val -id] / ˈvæl ɪd / adjective sound; just; well-founded. a valid reason. producing the desired result; effective. a valid antidote for gloom. having force, weight, or cogency; authoritative. Synonyms: cogent , substantial 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. Synonyms: convincing , logical Archaic. robust; well; healthy. valid British / ˈvælɪd, vəˈlɪdɪtɪ / adjective having some foundation; based on truth legally acceptable a valid licence having legal force; effective having legal authority; binding having some force or cogency a 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 valid Compare invalid 2 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 ; cf. prevail ( def. ) Explanation A valid argument is one that is well-grounded in fact, law or logic. "Their argument for annulment was valid because they had never even met and their marriage was the result of a clerical error at town hall." Something is valid when it can be supported or backed-up, or if it is functional: “She figured her password was valid because she had just set it.” In a legal context, valid means that something is binding or actionable: “At the time of the accident his license was no longer valid , so they impounded his car.” The logical grounding of an argument can be valid : “That’s a valid point about Santa being too large to fit down a chimney.” Keep Reading on Vocabulary.com Vocabulary lists containing valid Jim Burke's Academic Vocabulary List Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide! TEKS ELAR Academic Vocabulary List (5th-7th grades) Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use! The Real Deal: Synonyms for "True" Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time! 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. Customers who booked via Ticketmaster have been told refunds will be issued automatically, and tickets to the Manchester show will remain valid for the new date. From BBC • May 1, 2026 When it comes to immigration enforcement and schools, “when presented with a valid warrant signed by a federal judge or magistrate, school officials are obligated to comply and not to interfere,” Mattammal said. From Los Angeles Times • May 1, 2026 The challenge is how to handle such extraordinary returns without losing control of the stock when the investment thesis remains valid. From Barron's • Apr. 29, 2026 The word “durable” means that the document will remain valid even if you become incapacitated. From The Wall Street Journal • Apr. 28, 2026 It’s a valid question, because Zara doesn’t get up early. From "Red Flags and Butterflies" by Sheryl Azzam Related Words accurate authentic binding compelling conclusive credible good lawful legal legitimate logical original persuasive solid true well-founded Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023 Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.