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

In other words: The senior citizens that UnitedHealth insures through its large Medicare business are going to the doctor more than expected, increasing the company's costs of providing care. —Maria Aspan, NPR, 13 May 2025

Following Fraud Scheme Response Arizona is one of nine states where such a change could trigger the end of Medicaid expansion, which currently insures 648,000 low-income residents, or about 30% of AHCCCS recipients. —Jasmine Demers, ProPublica, 6 May 2025

This bill proposes to delete the requirement that the insurance policy name the HOA as an additionally named insured. —Kelly G. Richardson, San Diego Union-Tribune, 6 May 2025

The departures won’t affect patients who aren’t insured by Kaiser, because those physicians rarely saw patients with other coverage, said Scott Peek, president of Intermountain Health’s Front Range facilities, including Saint Joseph, Good Samaritan and Lutheran. —Meg Wingerter, Denver Post, 21 May 2025