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

This time, Trump wants to insure that the power ministries are fully in his control. —Susan B. Glasser, The New Yorker, 20 Feb. 2025

And in both, the woman can only overcome that desire by indulging it, and doing so will insure her destruction and save everyone else. —Jim Shepard, New York Times, 12 Feb. 2025

That helps explain why more than a fifth of the structures hit by the Pacific Palisades fire were insured under FAIR. —Stephen Mihm, The Mercury News, 15 Feb. 2025

In addition to insuring depositors, the FDIC supervises banks for safety and consumer protection. —Jason Lalljee, Axios, 12 Feb. 2025