noun which may take the genitive case particle 'no'
Used as a prenominal modifier (～の) to describe a person or thing one has never seen or met before. Often implies a complete lack of prior acquaintance.
I was suddenly spoken to by a complete stranger.
I got lost in an unfamiliar place.
stranger; unfamiliarity
Used as a noun to refer to a person one has never met, or the state of being unknown. Often appears in set phrases like 見ず知らずの他人.
He is a total stranger to me.
Don't let a complete stranger into your house.
I was asked for directions by a complete stranger.
It's risky to lend money to a total stranger.
I started living alone in a completely unfamiliar place.