loyal
US /ˈlɔɪ.əl/
UK /ˈlɔɪ.əl/
1.
leal, fiel
giving or showing firm and constant support or allegiance to a person or institution
:
•
He is a loyal friend who always stands by me.
Ele é um amigo leal que sempre me apoia.
•
The company has a very loyal customer base.
A empresa tem uma base de clientes muito leal.