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.

Plenty of millennials who are now adults will attest to its success.

From Los Angeles Times • May 27, 2026

Students will still be required to attest: “I pledge my honor that I have not violated the Honor Code during this examination.”

From The Wall Street Journal • May 12, 2026

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

From BBC • Apr. 18, 2026

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

From MarketWatch • Apr. 9, 2026

Greek art reached a pinnacle of beauty as respect for the individual flourished in Athens, and Roman relics attest to the might of the greatest empire in the ancient world.

From "The Annotated Mona Lisa" by Carol Strickland and John Boswell

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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