Question 1

What does "rest up" mean?

Accepted Answer

to spend time resting so that you feel stronger or healthier

Question 2

How do you use "rest up" in a sentence?

Accepted Answer

You should rest up before the long drive tomorrow.

Question 3

Is "rest up" formal or informal?

Accepted Answer

"rest up" is informal — used mainly in casual conversation. Common in conversation when someone is tired, ill, traveling, or has a demanding event coming soon.

rest up

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