noun
Refers to a person who holds a religious faith or follows a particular doctrine or leader. Often used in religious contexts, but can extend to devoted followers of a philosophy or person.
彼は熱心なキリスト教の信仰者だ。
He is a devout Christian believer.
その教祖には多くの信仰者がいる。
That religious founder has many followers.
Compound of 信仰 (しんこう, 'faith, belief') and 者 (しゃ, 'person'). The reading is standard on'yomi.