believer
//bɪˈliːvər//
Noun
believerSingular
believersPlural
1
A person who has faith in a religion, doctrine, or cause.
She is a true believer in the power of education.
2
A person who accepts something as true or real.
She is a firm believer in the power of education.
3
A supporter or advocate of a particular idea, movement, or person.
She is a strong believer in equal rights for all.