valid

[val-id] / ˈvæl ɪd /

ADJECTIVE

right, genuine

Synonyms

STRONGEST

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

WEAK

attested authoritative bona fide cogent confirmed convincing determinative efficacious efficient good-faith in force irrefutable just kosher legit official potent powerful proven pure sound stringent strong substantial telling tested trustworthy ultimate unadulterated unanswerable uncorrupted weighty well-grounded

Antonyms

STRONGEST

counterfeit evil fake false illegal illegitimate illicit improbable invalid unlawful unlikely unreal unreliable untrustworthy wrong

WEAK

unacceptable unsound

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.

Mail-in ballots are valid as long as they are posted by election day and arrive to county election offices by 9 June, the day before they are certified by the state's election authority.

From BBC • Jun. 4, 2026

In order to assess whether Trump’s lawsuit was valid, she ordered his personal attorneys and the DOJ to provide written explanations to the court detailing whether they were in conflict with each other.

From Slate • Jun. 4, 2026

Third, publish research that meets the criteria of relevant research—studies that answer questions that are timely, describe real problems, for which answers aren’t obvious, and for which findings are operationally valid.

From The Wall Street Journal • Jun. 3, 2026

Of course, there are valid concerns with this take on the data.

From Barron's • May 29, 2026

If Aristotle were to fall, the proof of God—a bulwark of the church—was no longer valid.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

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!