We define ensure as “to make sure, certain, or safe” and one sense of insure, “to make certain especially by taking necessary measures and precautions,” is quite similar.

to protect yourself against risk by buying insurance from a company that will provide an agreed amount of money if a particular event happens, for example if you are killed or injured or if …

INSURE definition: to guarantee against loss or harm. See examples of insure used in a sentence.

Definition of insure verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

In both British and American English, if you insure your property, you pay money to a company so that if the property is lost, stolen, or damaged, the company will pay you a sum of money.

If you insure yourself or your property, you pay money to an insurance company so that, if you become ill or if your property is damaged or stolen, the company will pay you a sum of money.

INSURE meaning: 1 : to buy insurance for (something, such as property or health); 2 : to provide insurance for (something, such as property or health)