foreign
US /ˈfɔːr.ən/
UK /ˈfɔːr.ən/

1.
étranger
of, from, in, or characteristic of a country or language other than one's own
:
•
She speaks three foreign languages fluently.
Elle parle couramment trois langues étrangères.
•
He prefers to travel to foreign countries.
Il préfère voyager dans des pays étrangers.
2.
étranger, inconnu
not characteristic of oneself; unfamiliar or strange
:
•
His sudden anger was completely foreign to his nature.
Sa colère soudaine était complètement étrangère à sa nature.
•
The concept of failure was foreign to him.
Le concept d'échec lui était étranger.