Synonyms of validate

validate

verb

ˈva-lə-ˌdāt 

1

as in to verify

to give evidence or testimony to the truth or factualness of

a witness independently validated the policeman's version of events

Synonyms & Similar Words

• verify
• confirm
• argue
• support
• corroborate
• prove
• authenticate
• vindicate
• certify
• demonstrate
• bear out
• substantiate
• attest
• witness
• establish
• affirm
• reinforce
• testify (to)
• guarantee
• assert
• document
• declare
• vouch (for)
• back (up)
• warrant
• profess
• aver
• reenforce
• avouch
• avow

Antonyms & Near Antonyms

• refute
• disprove
• rebut
• contradict
• deny
• challenge
• question
• gainsay
• dispute
• contest
• disavow
• disclaim

2

as in to prove

to show the existence or truth of by evidence

the booming economy in and of itself validated the soundness of the government's economic policies

Synonyms & Similar Words

• prove
• establish
• demonstrate
• verify
• document
• confirm
• substantiate
• identify
• corroborate
• support
• authenticate
• evidence
• uphold
• record
• certify
• buttress
• adduce
• witness
• attest
• vouch
• sustain
• evince
• back (up)
• testify
• circumstantiate
• confess
• clinch
• depose
• nail
• settle

Antonyms & Near Antonyms

• refute
• object
• disprove
• challenge
• rebut
• assume
• dispute
• guess
• presume
• suspect
• allege
• surmise
• conjecture

Synonym Chooser

How does the verb validate contrast with its synonyms?

Some common synonyms of validate are authenticate, confirm, corroborate, substantiate, and verify. While all these words mean "to attest to the truth or validity of something," validate implies establishing validity by authoritative affirmation or by factual proof.

validated the hypothesis by experiments

When might authenticate be a better fit than validate?

Although the words authenticate and validate have much in common, authenticate implies establishing genuineness by adducing legal or official documents or expert opinion.

handwriting experts authenticated the diaries

In what contexts can confirm take the place of validate?

While the synonyms confirm and validate are close in meaning, confirm implies the removing of doubts by an authoritative statement or indisputable fact.

confirmed the reports

When would corroborate be a good substitute for validate?

While in some cases nearly identical to validate, corroborate suggests the strengthening of what is already partly established.

witnesses corroborated his story

Where would substantiate be a reasonable alternative to validate?

The synonyms substantiate and validate are sometimes interchangeable, but substantiate implies the offering of evidence that sustains the contention.

the claims have yet to be substantiated

When is verify a more appropriate choice than validate?

The meanings of verify and validate largely overlap; however, verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at.

all statements of fact in the article have been verified

Example Sentences

Recent Examples of validate

The company’s timeline is further validated by the DOE’s Idaho National Lab, which also projects Natura’s MSR-1 as the first Gen IV reactor deployment in the US. —Aman Tripathi, Interesting Engineering, 15 Oct. 2025

The fluctuations were determined to be adiabatic and not isocurvature, further validating inflation. —Big Think, 14 Oct. 2025

Ultimately acknowledging the reality of the situation will validate the experience of people going through this. —Susan Caminiti, CNBC, 14 Oct. 2025

In 2020, the Supreme Court — in a roundabout way — ended the confusion by refusing to consider an appellate ruling that validated special taxes proposed by initiative and approved by simple majorities. —Dan Walters, Oc Register, 14 Oct. 2025

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