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

The source expressed optimism that the military money would come through but cautioned that it neither had been secured nor guaranteed.

— Daniel Libit, Sportico.com, 12 Oct. 2026
There seems room for him as a 14th player, but his contract doesn’t become guaranteed until opening night.

— Barry Jackson, Miami Herald, 11 Oct. 2026

Definition of guarantee

Verb

And not all of the proofs were certified as correct by the automatic logic verification platform Lean—in fact, some have already been retracted after outside scientists found mistakes.

— Joseph Howlett, Scientific American, 8 Oct. 2026
Adherence to the chain of custody laws is even more critical before an official result has been certified, and legal experts have encouraged judges to scrutinize warrant applications for ballots especially closely.

— Danielle Friedman, The Conversation, 8 Oct. 2026

Definition of certify

Verb

Secretary Rubio — who is also the US national security advisor — affirmed Saudi Arabia’s right to defend itself against Houthi aggression and Washington’s intention to honor its defense and security agreements with the kingdom.

— Faisal J. Abbas, semafor.com, 9 Oct. 2026
Amendment supporters have largely campaigned on the gender-affirming care language in the amendment.

— Kacen Bayless, Kansas City Star, 8 Oct. 2026

Definition of affirm

Verb

The determination to do so sometimes exacts a great price, as Gettysburg attests.

— Arkansas Online, Arkansas Online, 1 Oct. 2026
More than 12,900 five-star reviewers attest to the function and style, with one reviewer sharing that the AirTag slot brought peace of mind while on an international trip.

— Amelia McBride, Travel + Leisure, 27 Sep. 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 13 Oct. 2026.

Copy Citation

Synonyms of testify (to)

verb

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

abscond

Popular in Grammar & Usage

Do You Need a New Language Peeve?

The Exceptions of '-s' and '-es' Plurals

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

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

What's the difference between 'fascism' and 'socialism'?

Popular in Wordplay

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

The Words of the Week - Oct. 9

Why do we call it a 'flea market'?

Popular

Do You Need a New Language Peeve?

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

Games & Quizzes