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

Even though Klement has made clear that this forecasting is not something he takes very seriously, his success in this area has been no mean feat, as fans of favored teams can attest.

From MarketWatch • Apr. 17, 2026

A statement from Kimbark Elementary’s principal was also required to attest to Honey’s academic readiness.

From Los Angeles Times • Mar. 6, 2026

But as a generation of buyers can attest, these hard-revving little gassers suffered a host of maintenance, reliability and durability issues.

From The Wall Street Journal • Feb. 6, 2026

But I can attest that nothing I saw early on the afternoon of May 10 suggested that a murderous storm was bearing down.

From "Into Thin Air" by Jon Krakauer

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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