a person with whom one has had no personal acquaintance

He is a perfect stranger to me.

a newcomer in a place or locality

a stranger in town.

an outsider

They want no strangers in on the club meetings.

a person who is unacquainted with or unaccustomed to something (usually fol. by to )

He is no stranger to poverty.

a person who is not a member of the family, group, community, or the like, as a visitor or guest

Our town shows hospitality to strangers.

Law . one not privy or party to an act, proceeding, etc.

noun

acquaintance , friend , local , native

noun

alien , drifter , foreign body , foreigner , guest , immigrant , incomer , interloper , intruder , itinerant person , migrant , migratory worker , new arrival , newcomer , outcomer , outlander , out-of-stater , outsider , party crasher , perfect stranger , squatter , transient , uninvited person , unknown , unknown person , visitor , wanderer , migr , novice , odder