One who is strange, foreign, or unknown.
- One who is neither a friend nor an acquaintance.
- A foreigner, newcomer, or outsider.
- One who is unaccustomed to or unacquainted with something specified; a novice: a stranger to our language; no stranger to hardship.
- A visitor or guest.
- Law One that is neither privy nor party to a title, act, or contract.