loyal
US /ˈlɔɪ.əl/
UK /ˈlɔɪ.əl/
1.
fidèle, loyal
giving or showing firm and constant support or allegiance to a person or institution
:
•
He is a loyal friend who always stands by me.
C'est un ami fidèle qui me soutient toujours.
•
The company has a very loyal customer base.
L'entreprise a une clientèle très fidèle.