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as in to guarantee
to declare (something) to be true or genuine experts certified the letter as indeed having been written by Abraham Lincoln

Synonyms & Similar Words

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Synonym Chooser

How does the verb certify contrast with its synonyms?

Some common synonyms of certify are attest, vouch, and witness. While all these words mean "to testify to the truth or genuineness of something," certify usually applies to a written statement, especially one carrying a signature or seal.

certified that the candidate had met all requirements

When would attest be a good substitute for certify?

The meanings of attest and certify largely overlap; however, attest applies to oral or written testimony usually from experts or witnesses.

attested to the authenticity of the document

In what contexts can vouch take the place of certify?

In some situations, the words vouch and certify are roughly equivalent. However, vouch applies to one who testifies as a competent authority or a reliable person.

willing to vouch for her integrity

When could witness be used to replace certify?

Although the words witness and certify have much in common, witness applies to the subscribing of one's own name to a document as evidence of its genuineness.

witnessed the signing of the will

Example Sentences

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.
Recent Examples of certify Once inspected they can be certified, potentially lowering insurance costs. Elizabeth Weise, USA Today, 1 Apr. 2025 All teachers working in adult education are certified Connecticut teachers who hold additional adult education certifications. Larry Covino, Hartford Courant, 20 Mar. 2025 Key features: Solar safe filter technology protects eyes from IR, UV, and 99.99% of visible light, CE and ISO certified, model number ‏MK7062. Paul Brett, Space.com, 20 Mar. 2025 The record-breaking festive song has been certified diamond by the RIAA with over 10 million copies sold and has been streamed over two billion times on Spotify as of December 2024 — the first holiday song to do so. Marina Watts, People.com, 20 Mar. 2025 See All Example Sentences for certify
Recent Examples of Synonyms for certify
Verb
  • Unlike the drama and comedy series races, which are guaranteed eight nominees regardless of submission count, the limited series category uses a proportional system.
    Clayton Davis, Variety, 10 Apr. 2025
  • The game is almost guaranteed to be over when Emmanuel Clase comes in, but the All-Star closer did not have his best stuff.
    Ryan Morik, FOXNews.com, 10 Apr. 2025
Verb
  • In April 2022, prosecutors say Santos falsely reported a $500,000 personal loan to his campaign, enabling him to boast an $800,000 Q1 fundraising haul.
    Jason Volack, ABC News, 5 Apr. 2025
  • The extreme sacrifice that drives the exploding ants spotlights nature’s ability to enable survival at all costs.
    Scott Travers, Forbes.com, 5 Apr. 2025
Verb
  • But now, the SSA is changing that policy, which a White House official told CBS MoneyWatch is due to the rollout of anti-fraud software that will be able to identify anomalies and flag potential fraud when people verify their identities over the phones.
    Anne Marie Drummond Lee, CBS News, 10 Apr. 2025
  • The most recent press release on the matter, dated March 26, announced that many claimants would no longer be able to verify their identity with the SSA by phone.
    Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025
Verb
  • After affirming his commitment to cooperating with the investigation, protecting Jewish students and protecting free speech, Wood referenced the protest.
    Jennah Pendleton, Sacramento Bee, 24 Mar. 2025
  • At the same time with all of this, box office sources, not just Disney, affirm that Snow White played evenly across the country.
    Anthony D'Alessandro, Deadline, 23 Mar. 2025
Verb
  • Around 170 workers were cut from the FDA's Office of Inspections and Investigations, according to two federal health officials who were not authorized to speak publicly.
    Alexander Tin, CBS News, 2 Apr. 2025
  • The Senate resolution, introduced by Senator Tim Kaine, a Virginia Democrat, would repeal Trump's February emergency declaration authorizing the tariffs.
    Jason D. Greenblatt, MSNBC Newsweek, 2 Apr. 2025
Verb
  • An official familiar with the matter confirmed to ABC News that days after Vance's visit, Col. Sussanah Meyers wrote an email to base personnel that distanced the base from some of the vice president's comments about Denmark, of which Greenland is a semi-autonomous territory.
    Luis Martinez, ABC News, 11 Apr. 2025
  • He was pronounced dead by a physician at 6:05 p.m., the South Carolina Department of Corrections confirmed to CBS News.
    CBS News, CBS News, 11 Apr. 2025
Verb
  • As as Oklahoma and USC, which suffered the devastating break in JuJu Watkins’ knee injury, can attest, an opponent can only pick its poison against UConn now.
    Dom Amore, Hartford Courant, 1 Apr. 2025
  • Our staff can attest that Dyson’s cordless vacuums of all types are high-quality, super efficient, and—not to be dramatic—life-changing.
    Julia Harrison, Architectural Digest, 27 Mar. 2025
Verb
  • Employees with a knack for technology or analytical skills can be trained and empowered to take on more technical roles.
    Brad Smith, Forbes.com, 9 Apr. 2025
  • Be Specific and Objective Feedback is a pivotal tool in empowering growth.
    Rolling Stone Culture Council, Rolling Stone, 9 Apr. 2025

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Cite this Entry

“Certify.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/certify. Accessed 16 Apr. 2025.

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