testify (to)

Definition of testify (to)next
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
  • Rigorous, exhaustive testing of all tracks, signaling systems, and vehicles is the standard industry practice for major airport transit infrastructure to guarantee seamless long-term system integration.
    Los Angeles Times, Los Angeles Times, 24 June 2026
  • After the top four picks, the remaining 10 lottery teams are slotted in according to their records (meaning that the worst team is guaranteed at least the fifth pick).
    Rohan Nadkarni, NBC news, 24 June 2026
Verb
  • For example, the deal with blue-collar workers includes 10% add-on pay to boat operators who get certified as an emergency medical technician.
    David Garrick, San Diego Union-Tribune, 17 June 2026
  • Plus, their windows are ENERGY STAR certified.
    Alora Bopray, USA Today, 17 June 2026
Verb
  • The company has issued an update on its plans, affirming that the verification system will begin rolling out in select countries later this year.
    Ryan Whitwam, ArsTechnica, 18 June 2026
  • But the justices affirmed the 5th Circuit’s decision.
    Los Angeles Times, Los Angeles Times, 18 June 2026
Verb
  • If the underlying model behind an agent can be identified and attested, then trust no longer has to rest on the interface alone.
    Sean Lee, Forbes.com, 19 June 2026
  • And as many police officers will attest, those investments make policing more effective, not less.
    Diane Goldstein, Mercury News, 19 June 2026
Verb
  • She's lived through many hurricanes and other storms, but never witnessed thunder and lightning like this.
    CBS News, CBS News, 19 June 2026
  • Pliny the Younger, a Roman author who witnessed Vesuvius’ infamous eruption, wrote that people tried to protect themselves with objects or pillows secured onto their heads with towels.
    Margherita Bassi, Popular Science, 18 June 2026
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

Cite this Entry

“Testify (to).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/testify%20%28to%29. Accessed 24 Jun. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster