rest assured

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A reassuring phrase meaning that someone can feel certain, calm, or confident about what is being said.

Examples

  • Customers can rest assured that their data is protected.
  • Please rest assured that your concerns have been heard.
  • Parents may rest assured that staff are trained for emergencies.
  • Rest assured, the team has tested the system carefully.
  • Rest assured, we will contact you if anything changes.

Similar words

be certain
be assured
do not worry
trust
be sure
be confident
take comfort

Meanings

Usage

Use it when the tone should be calm, polite, and reassuring. In casual speech, don't worry, you can be sure, or trust me may sound more natural.

Common mistakes

Rest assure is not the standard phrase. Use rest assured, often followed by that and a complete clause.

Etymology

The phrase combines rest, in the older sense of remain or stay, with assured, meaning certain or confident. Its literal idea is to remain in a state of assurance, which developed into a polite formula of reassurance.

FAQ

What does rest assured mean?

It means you can feel certain, calm, or confident that something is true or will be handled.

Is rest assured formal?

It is fairly formal or polite, and it is common in emails, notices, and customer service messages.

Do you say rest assure or rest assured?

The correct phrase is rest assured. Rest assure is not standard.

Can rest assured be followed by that?

Yes. Rest assured that your information is safe is a normal pattern.

What is a synonym for rest assured?

Synonyms include be assured, be certain, be confident, do not worry, and be sure.

Is rest assured a command to sleep?

No. It is not about sleeping. It means remain confident or feel reassured.

How do you use rest assured in a sentence?

For example: Rest assured, your application is being reviewed.

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