validate

verb

val·​i·​date ˈva-lə-ˌdāt 

validated; validating

transitive verb

1

a

: to make legally valid : ratify

b

: to grant official sanction to by marking

validated her passport

c

: to confirm the validity of (an election)

also : to declare (a person) elected

2

a

: to support or corroborate on a sound or authoritative basis

experiments designed to validate the hypothesis

b

: to recognize, establish, or illustrate the worthiness or legitimacy of

validate his concerns

validator

ˈva-lə-ˌdā-tər 

noun

Did you know?

When validate first entered the language in the mid-17th century, its meaning was tied fast to its close relative, the adjective valid, meaning “executed with the proper legal authority and formalities”: to validate something, such as a marriage or treaty, was to make it legally valid. This meaning is still current, but the word is now used in nonlegal and informal contexts as well. If the museum you visit validates your parking garage ticket, you're given an official mark on the ticket and you do not have to pay full price for parking. If someone’s claims cannot be validated, those claims cannot be confirmed. And if a coach puts an untested player into the game and the player scores the winning point, the player’s strong performance validates the coach’s decision.

Synonyms of validate

• verify
• confirm

Choose the Right Synonym for validate

confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something.

confirm implies the removing of doubts by an authoritative statement or indisputable fact.

confirmed the reports

corroborate suggests the strengthening of what is already partly established.

witnesses corroborated his story

substantiate implies the offering of evidence that sustains the contention.

the claims have yet to be substantiated

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

authenticate implies establishing genuineness by adducing legal or official documents or expert opinion.

handwriting experts authenticated the diaries

validate implies establishing validity by authoritative affirmation or by factual proof.

validated the hypothesis by experiments

Examples of validate in a Sentence

The court validated the contract.

A judge still needs to validate the election.

Customs officers validated our passports.

The decline in sales only validated our concerns.

Recent Examples on the Web

That could validate decisions by big retailers like Amazon to block agents, whose robot eyeballs can’t be monetized the same way humans’ can. — Jake Angelo, semafor.com, 10 Nov. 2026

The Armaments Center ultimately intends to validate the technology and transition it to industry partners and the Army‘s acquisition community. — Jijo Malayil, Interesting Engineering, 6 Nov. 2026

Generative AI tools tend to be complacent, validating user premises without questioning the underlying logic. — Marco Stefanini, Forbes.com, 6 Nov. 2026

The Vietnam War validated Morgenthau’s belief that power untethered from questions of morality would lead to overreach. — David Sacks, Foreign Affairs, 6 Nov. 2026

Word History

Etymology

borrowed from Medieval Latin validātus, past participle of validāre "to make valid," derivative of Latin validus "in good health, having legal authority" — more at valid

First Known Use

1648, in the meaning defined at sense 1a

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Kids Definition

validate

verb

val·​i·​date ˈval-ə-ˌdāt 

validated; validating

: to make valid

validation

ˌval-ə-ˈdā-shən

noun

Legal Definition

validate

transitive verb

val·​i·​date ˈva-lə-ˌdāt 

validated; validating

1

a

: to make valid

b

: to grant official sanction to by marking

2

: to confirm the validity of (an election)

validation

ˌva-lə-ˈdā-shən 

noun