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

The good news is that everyone was insured, and nobody got injured. —Leonard Greene, New York Daily News, 15 Mar. 2025

In the wake of Trump’s comments, and in the lead-up to Greenland’s election, Frederiksen, the Danish Prime Minister, has been engaged in a diplomatic tap dance to insure a common front with Naalakkersuisut, the government in Nuuk. —Louise Bokkenheuser, The New Yorker, 11 Mar. 2025

Casual Grammys viewers may be surprised to learn the numbers of those working in music who are insured. —Katie Kilkenny, The Hollywood Reporter, 7 Mar. 2025

Lopes said his next step is to get his car properly registered and insured. —Briah Lumpkins, Charlotte Observer, 6 Mar. 2025