Definition

A person who walks around while they are asleep, often without being aware of it.

Example

The somnambulist wandered through the house at night without realizing it.

Conversation

Did you hear about Sarah? She’s been acting like a real somnambulist lately.

No way! What do you mean?

She walked into the kitchen last night without even waking up.

That's wild! I hope she doesn't hurt herself while sleepwalking.

Synonyms & Antonyms

Root Explanation

Somnambulist → It is formed from "somnus" (meaning sleep) and "ambulare" (meaning to walk). The word describes a person who walks while asleep, literally a sleepwalker.

Memory Tip

Think of someone 'walking' ('ambulare') while they are 'asleep' ('somnus') — that's what a somnambulist does.

Visually Confused Words