as in to ensure
to make sure, certain, or safe took steps to insure the timely completion of the project

Synonyms & Similar Words

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Antonyms & Near Antonyms

Synonym Chooser

How is the word insure distinct from other similar verbs?

Some common synonyms of insure are assure, ensure, and secure. While all these words mean "to make a thing or person sure," insure sometimes stresses the taking of necessary measures beforehand.

careful planning should insure the success of the party

When can assure be used instead of insure?

In some situations, the words assure and insure are roughly equivalent. However, assure distinctively implies the removal of doubt and suspense from a person's mind.

I assure you that no harm will be done

How is ensure related to other words for insure?

Ensure, insure, and assure are interchangeable in many contexts where they indicate the making certain or inevitable of an outcome, but ensure may imply a virtual guarantee.

the government has ensured the safety of the refugees

When is secure a more appropriate choice than insure?

The words secure and insure can be used in similar contexts, but secure implies action taken to guard against attack or loss.

sent reinforcements to secure their position

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 insure The space insurance market began in 1965, when Lloyds Bank insured Intelsat I, which broadcast the Apollo 11 moon landing. Tom Brown, Space.com, 28 June 2025 Hazel was charged with engaging police in pursuit, interfering with police, reckless driving, possession of cocaine with intent to sell, possession of a narcotic substance with intent to sell, first-degree reckless endangerment, evading responsibility and failure to insure a motor vehicle. Justin Muszynski, Hartford Courant, 27 June 2025 The number represents more than one-fifth of the roughly 15 million Californians insured under the state’s low-income health program. Nicole Nixon, Sacbee.com, 27 June 2025 Each one had to be checked to insure that facts were complete and accurate and that all applicants qualified as residents. Jack O'Connor, Outdoor Life, 26 June 2025 See All Example Sentences for insure
Recent Examples of Synonyms for insure
Verb
  • Vogue's Favorite Japanese Sunscreens Japan has strict sunscreen regulations to ensure high standards and qualities for safety and effectiveness.
    Iman Balagam, Vogue, 14 July 2025
  • And ensuring the fit is right will also remain paramount.
    Jean E. Palmieri, Footwear News, 14 July 2025
Verb
  • The French club’s Europa League participation next season was assured.
    Matt Woosnam, New York Times, 12 July 2025
  • Buehrle famously had a couple of beers (or maybe more) in the clubhouse during the game after being assured he wouldn’t be used out of the bullpen, then got the final out in the 14th after Blum’s solo home run gave the Sox the lead in a 7-5 win.
    Paul Sullivan, Chicago Tribune, 11 July 2025
Verb
  • Although named in the court documents, no person or company listed is guaranteed to be called to the witness stand if the case makes it to trial.
    DeMicia Inman, VIBE.com, 15 July 2025
  • The deal included $90 million guaranteed and a $13.75 million signing bonus, according to the NFL Network.
    Ryan Gaydos, FOXNews.com, 15 July 2025

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Cite this Entry

“Insure.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insure. Accessed 21 Jul. 2025.

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