Be able to do something in your sleep

usgb
phrase

To be very familiar with a task or skill, to the point of being able to perform it without having to think about it.

He's been practicing guitar so long, he can play it in his sleep.
Visual representation of "be able to do something in your sleep" - To be very familiar with a task or skill, to the point of being able to perform it without having to think about it

Often appears as...

  • play in his sleep
  • do it in his sleep

Usage tips

Idiomatic

Definition 1 of 1
Visual representation of "be able to do something in your sleep"
LampPro Tip 1/3

Expert Level

Use this phrase to express a high level of skill or expertise in an activity.

Illustration for Expert Level
She can solve complex math problems in her sleep—she's a real expert.
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Colloquial Use

It's informal slang, suitable for casual conversations rather than formal or professional settings.

Illustration for Colloquial Use
Don't worry about the test; you've studied so much, you could do it in your sleep.
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Hyperbole

This phrase is an exaggeration, not to be taken literally—it's just a way of emphasizing proficiency.

Illustration for Hyperbole
I've made this recipe so many times I could do it in my sleep.
Visual representation of the word "Be able to do something in your sleep"

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