Definitions

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.

Hugo and his fellow Year 10 French students can attest to the success of this method.

From BBC • Apr. 18, 2026

It isn’t that “V-shaped” rebounds like what investors just witnessed don’t happen — they clearly do, as anybody who held on through last April’s tariff tantrum can no doubt attest.

From MarketWatch • Apr. 16, 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

All Hachette authors are required to attest that their manuscripts are “original and created by them” before receiving a contract, the spokeswoman said.

From The Wall Street Journal • Mar. 20, 2026

“As my guards can attest, I was here the entire night. Though if the king wants me questioned, I can always tell him that you can vouch for me, too.”

From "Throne of Glass" by Sarah J. Maas

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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