Creeped out' is a term used to describe the feeling of being unnerved or frightened by something unexpected. It is often used in reference to a person or situation that causes one to feel uneasy or scared. The term 'SEEPED' is a variant of the word 'creeped' and means to slowly spread or ooze out. In this context, it can be used to describe the feeling of being unnerved or frightened by something that gradually spreads throughout a situation.