Meaning

noun anyone who does not belong in the environment in which they are found

noun an individual that one is not acquainted with

adjective being definitely out of the ordinary and unexpected; slightly odd or even a bit weird

originFrom Middle English straunger, from Old French estrangier (“foreign, alien”), from estrange, from Latin extraneus (“foreign, external”) (whence also English estrange), from extra (“outside of”). Cognate with French étranger (“foreigner, stranger”) and Spanish extranjero (“foreigner”). Displaced native Old English fremde (literally “strange or unfamiliar person”).

Etymology from Wiktionary, CC BY-SA 3.0