Definitions

validate

[val-i-deyt] / ˈvæl ɪˌdeɪt /

VERB

ascertain the truth, authenticity of something

Synonyms

STRONGEST

approve certify confirm corroborate endorse justify legalize legitimize ratify substantiate verify

STRONG

authenticate authorize constitute okay sanction

WEAK

John Hancock bear out give stamp of approval give the go-ahead give the green light give the nod make binding make legal make stick rubber-stamp set seal on sign off on

Antonyms

STRONGEST

contradict deny disagree disallow disapprove discredit disprove invalidate oppose refuse reject repudiate veto

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.

Hoskins has until late July to validate the petition, while Missouri’s primary is on Aug. 4.

From Slate • May 14, 2026

As a result, users may not need to seek out fringe online communities or persuade others to validate their ideas.

From Science Daily • May 11, 2026

Successfully fast-tracking a treatment would validate Moderna’s mRNA platform, even if the total number of cases is low.

From Barron's • May 11, 2026

Initial Cybertruck sales of 38,965 in 2024 seemed almost to validate Musk’s optimism.

From Los Angeles Times • May 5, 2026

My poor child has given herself over to fear, and that fear has made her desperate to validate her misperceptions.

From "Educated" by Tara Westover

Vocabulary lists containing validate

The SAT: Language of the Test, List 2

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The New SAT: The Language of the Test

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The ACT: The Language of the Test, List 3

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!