Synonyms of insure

insure

verb

in-ˈshu̇r 

as in to ensure

to make sure, certain, or safe

took steps to insure the timely completion of the project

Synonyms & Similar Words

• ensure
• assure
• guarantee
• secure
• guaranty
• ice
• cinch
• certify
• promise
• vouch
• witness
• warrant
• pledge
• attest
• swear

Antonyms & Near Antonyms

• undermine
• weaken
• enfeeble

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

Recent Examples of insure

For decades, the government failed to grant fishing licenses to women, depriving them of fuel subsidies and the right to insure their boats. —Robin Wright, New Yorker, 7 June 2025

Related Articles California and Google will make a media fund for the floundering news industry A Silicon Valley senator is proposing to insure multifamily development loans. —Tom Philp, Mercury News, 20 May 2025

Longbridge Platinum, a proprietary jumbo reverse mortgage, is available in about half the U.S. HECM A HECM is the most common type of reverse mortgage, insured by the Federal Housing Administration and available to homeowners 62 or older. —Kelsey Neubauer, CNBC, 20 May 2025

In the Palisades, many homes were insured for more than $1 million. —Robert Kaplan, Mercury News, 3 June 2025