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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.

To validate the approach, researchers used 352 urine samples that had already been collected during routine testing at Basingstoke and North Hampshire Hospital.

From Science Daily • Mar. 31, 2026

After 2040, the Chinese lunar base will be used to "validate technology and capabilities for a manned mission to Mars", according to the CNSA.

From Barron's • Mar. 26, 2026

You’re just there to witness their grief and validate their emotions.

From MarketWatch • Mar. 19, 2026

“This new agreement continues to validate Nebius as one of the leading neocloud players, alongside CoreWeave,” Platt says.

From The Wall Street Journal • Mar. 17, 2026

My assumption was that he would hear what Barack and I had to say and then instantly validate all my grievances.

From "Becoming" by Michelle Obama