impiety; irreverence; lack of piety
Refers to a lack of religious devotion or respect, often used in formal or religious contexts.
His irreverent attitude was criticized at church.
Impiety is considered a sin in many religions.
Compound of 不 (fu-, 'not') and 敬虔 (keiken, 'piety, reverence'). 敬虔 itself is a Sino-Japanese word from 敬 (kei, 'respect') and 虔 (ken, 'pious').