Synonyms of ensure

ensure

verb

in-ˈshu̇r 

as in to assure

to make sure, certain, or safe

regulations that ensure the wholesomeness of our food

Synonyms & Similar Words

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

Antonyms & Near Antonyms

• undermine
• weaken
• enfeeble

Synonym Chooser

How is the word ensure distinct from other similar verbs?

Some common synonyms of ensure are assure, insure, and secure. While all these words mean "to make a thing or person sure," 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

Where would assure be a reasonable alternative to ensure?

The meanings of assure and ensure largely overlap; however, assure distinctively implies the removal of doubt and suspense from a person's mind.

I assure you that no harm will be done

When could insure be used to replace ensure?

Although the words insure and ensure have much in common, insure sometimes stresses the taking of necessary measures beforehand.

careful planning should insure the success of the party

When is secure a more appropriate choice than ensure?

The words secure and ensure 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 ensure

Charles loaned the money to his brother, now known as Andrew Mountbatten-Windsor, out of his private income to ensure that the Crown Estate was paid on time, a person familiar with the payment said Friday. — Danica Kirka, Los Angeles Times, 9 Oct. 2026

Natural light streams into the galleries, ensuring an atmosphere that's always serene and never stuffy. — Condé Nast, Condé Nast Traveler, 4 Oct. 2026

Lee then paused all executions after acknowledging the state had failed to ensure its lethal injection drugs were properly tested. — Arkansas Online, 3 Oct. 2026

Since 2014, trade groups representing both automakers and auto mechanics have made agreements meant to ensure that repair shops have access to the same data, parts and tools as bigger dealerships. — Robert Ferris, CNBC, 3 Oct. 2026