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

How to insure homes that are increasingly at risk of being swallowed by devastating blazes has been a growing dilemma in California, where climate change is making wildfires more frequent, more severe, and more unpredictable. —Giulia Carbonaro, MSNBC Newsweek, 23 Aug. 2025

Part of the reason why car insurance premiums could increase by the end of 2025 is the cost to insure parts manufactured in foreign countries. —Charles Singh, The Tennessean, 22 Aug. 2025

Were they insured for the losses? —Hope Karnopp, jsonline.com, 22 Aug. 2025

Healthy people are cheaper for health insurance companies, and the companies rely on their participation to help balance out the costs of insuring sicker people. —Lisa Schencker, Chicago Tribune, 21 Aug. 2025