Sleepwalker (noun)

A person who walks or performs other activities while asleep.

Origin:

From 'sleep' + 'walker'.

Examples:

1. The sleepwalker was found wandering in the street in his pajamas.
2. Sleepwalking is a common condition that can be caused by stress or sleep deprivation.
3. The sleepwalker should be guided back to bed carefully to avoid waking them.
4. The sleepwalker's eyes were open but he was not fully conscious of his surroundings.
5. Sleepwalking can be dangerous as the sleepwalker is not aware of their actions and can harm themselves or others.