sleepwalker
nounmasculine/suˈnɐ̃bulu/low
so·nâm·bu·lo
Definition
A person who habitually gets up and walks about while asleep.
My brother was a sleepwalker as a child.
It can be dangerous to suddenly wake a sleepwalker.
syn
Common collocations
chronic sleepwalkersleepwalker episodewake a sleepwalker
Etymology
Do latim 'somnambulus', de 'somnus' (sono) + 'ambulare' (andar).