authentically

adverb
1
in a way that is true and accurate
به‌طور واقعی, به صورت حقیقی, به‌درستی, دقیقاً
2
in a way that is exactly the same as the original
به‌طور اصیل, به‌طور واقعی
authentically flavoured Mexican dishes
an authentically constructed Wild West town