1. Assure Versus Ensure Versus Insure I Assure You I Will Ensure Everyone Has Insurance A Grammar Girl Lesson

2. Assure Versus Ensure Versus Insure Assure, ensure, and insure have the same underlying meaning, but they each have a slightly different use. Assure is the only one of the three words that means “to reassure someone or to promise.” I assure you the chocolate is fresh.

3. Ensure Ensure chiefly means “to make certain or to guarantee.” He must ensure that the effect is eye-popping.

4. Insure Insure can be interchangeable with ensure in some cases, but it is easier to keep these words straight by reserving insure for references to insurance. I need to insure my car.