Thesaurus results for TESTIFY (TO)

testify (to)

verb

Definition of testify (to)

as in to guarantee

to declare (something) to be true or genuine that auction house will always testify to a painting's authenticity

Synonyms & Similar Words

Relevance

Example Sentences

Recent Examples of Synonyms for testify (to)

Verb

There’s one specification that the next MacBook Neo is almost guaranteed to receive.

— Ewan Spence, Forbes.com, 27 July 2026
We are all almost guaranteed to be presented with unexpected challenges.

— R. Eric Thomas, Mercury News, 26 July 2026

Definition of guarantee

Verb

Airports would need new fueling systems, aircraft manufacturers would have to certify new designs, and regulators would need global standards for handling and distribution.

— Aamir Khollam, Interesting Engineering, 24 July 2026
The judge who in 2024 certified the Vaughn case as a class action ruled that claims for damages against Tesla would have to be made in separate lawsuits.

— Ethan Baron, Mercury News, 24 July 2026

Definition of certify

Verb

Though marvelously affirming for film fans, this is not a sustainable business plan.

— Culture Critic, Los Angeles Times, 24 July 2026
The Alaska letter asks recipients to affirm their citizenship status via letter, phone or email, and Beecher said the division is not requiring paperwork or documentation.

— ABC News, ABC News, 23 July 2026

Definition of affirm

Verb

That comment was relayed to our senior writer Zack Rosenblatt, who attested to Banjo’s ability entering the young coordinator’s second season on the job.

— Jourdan Rodrigue, New York Times, 21 July 2026
Cadman pleaded guilty to federal charges of conspiracy against rights and attesting to a false tax return and is awaiting sentencing.

— Brittny Mejia, Los Angeles Times, 20 July 2026

Definition of attest

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Browse Nearby Words

testifying (to)

testify (to)

testimonial

See all Nearby Words

Cite this Entry

Style

“Testify (to).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/testify%20%28to%29. Accessed 31 Jul. 2026.

Copy Citation

Synonyms of testify (to)

verb

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

comely

Popular in Grammar & Usage

7 Pairs of Commonly Confused Words

Merriam-Webster’s Great Big List of Words You Love to Hate

Is it 'nerve-racking' or 'nerve-wracking'?

Why does English have so many silent letters?

Your vs. You're: How to Use Them Correctly

Popular in Wordplay

Dutch Treat and French Leave: Eight Place-Based Compounds

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

The Words of the Week - Jul. 31

Even More Bird Names that Sound Like Insults (and Sometimes Are)

Popular

7 Pairs of Commonly Confused Words

Dutch Treat and French Leave: Eight Place-Based Compounds

14 Phobias You Probably Haven't Heard Of

Games & Quizzes