sleepwalker

American  

[sleep-waw-ker] / ˈslipˌwɔ kər /

noun

1. a person who walks, eats, or performs other motor acts while asleep and is unaware of doing so upon awakening; a person with a disorder characterized by this.

   A sleepwalker may do something that could cause injury, such as climbing out of a window or walking into objects.

2. a person who acts seemingly without awareness, feeling, aim, or will.

   My parents were sleepwalkers, moving about their world as if oblivious to it and to themselves.

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Etymology

Origin of sleepwalker

sleep + walker

Example Sentences

“So, are you a sleepwalker? We had one of those once.”

From Literature

When midnight chimed on the grandfather clock, just as the night before, our sleepwalker soon emerged from his room, padded down the long hallway, and again slipped into the back garden.

From Literature

I felt as if I was the only person awake in a city of sleepwalkers.

From Salon

Especially mysterious is the story of a couple the islanders refer to as “the sleepwalkers,” who stayed at the Villa Rosa the year before and drowned.

From Seattle Times

I go outside in my pajamas like a sleepwalker to retrieve my L.A.

From Los Angeles Times