FluentLab

Confusable pair · B2

Assure, ensure or insure?

You assure a person: you tell them something to remove their doubt. You ensure a result: you make certain it happens. You insure property: you buy financial cover against loss. Assure always takes a person as its object, which is the quickest way to check.

Which word, and why

assure

tell a person, to remove their doubt

To tell someone confidently that something is true.

I assure you · assure him that · rest assured

ensure

make certain that something happens

To make sure that something takes place.

ensure that · ensure compliance · ensure safety

insure

buy financial cover

To arrange compensation in the event of loss or damage.

insure the building · fully insured · insure against

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Or take a mixed session across every topic