best friend
US /ˌbest ˈfrend/
UK /ˌbest ˈfrend/

1.
sahabat baik, kawan rapat
a person's closest friend
:
•
She told her best friend everything.
Dia memberitahu sahabat baiknya segala-galanya.
•
He and his best friend have known each other since childhood.
Dia dan sahabat baiknya telah mengenali satu sama lain sejak kecil.