adjective/e.tʁɑ̃.ʒe/
foreign; unacquainted
“Je ne suis pas étranger aux crises d'angoisse.” — I'm not immune to anxiety attacks.
Inherited from Middle French estranger, from Old French estrangier, from estrange + -ier, equivalent to modern French étrange + -er. Cf. also Vulgar Latin *extraneārius, Italian straniero, Portuguese estrangeiro.