competent

adjective
C1+
1
C1+
having enough skill or knowledge to do something well or to the necessary standard
ماهر, کاردان, توانا, شایسته, دارای صلاحیت
opposite incompetent
2
C1+
of a good standard but not very good
شایسته, قابل, مناسب, لایق
Ron was a competent player—more than that, he was good!
3
having the power to decide something
صاحب صلاحیت, مختار, صاحب اختیار
The case was referred to a competent authority.