noun, na-adjective
irreligion; atheism; lack of faith
Refers to the absence of religious belief or faith. Can be used as a noun or adjectival noun (e.g., 無信な人).
彼は無信の立場をとっている。
He takes an irreligious stance.
無信な社会では、宗教的な行事は少ない。
In an irreligious society, religious events are few.