attest

[uh-test] / əˈtɛst /

VERB

affirm, vouch for

Synonyms

STRONGEST

authenticate corroborate demonstrate indicate substantiate swear verify

STRONG

adjure announce argue assert aver certify confirm countersign declare display exhibit prove ratify seal show support sustain testify uphold warrant witness

WEAK

asseverate bear out bear witness give evidence

Antonyms

STRONGEST

conceal disprove hide

STRONG

abstain contradict cover deny disavow discredit invalidate oppose refuse reject repudiate veto withhold

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.

Ed Egilinsky, managing director and head of sales at the financial-products provider Direxion, can attest to that.

From MarketWatch • Apr. 9, 2026

“My wife and my kids can attest, I was laughing as if I saw them for the first time,” Oliver said.

From The Wall Street Journal • Apr. 1, 2026

I can attest to that after spending several hours with her on Tuesday, hustling to keep up as she taught at two schools and then hurried home to greet her private students.

From Los Angeles Times • Mar. 21, 2026

Meanwhile, a more senior prosecutor named Mark Coyne would attest that Habba was not running the office and that the triumvirate was following the law.

From Slate • Mar. 20, 2026

That was a long ride, as he could well attest, having just ridden it the other way.

From "A Game of Thrones" by George R.R. Martin

Vocabulary lists containing attest

100 SAT Words Beginning with "A"

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Posted

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The Ancient Period, Before 600 BCE

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