親不孝 おやふこう Also written 親不幸 Meanings Noun, する verb, Intransitive, な-adjective lack of filial piety; disobedience to one's parents Antonym: 親孝行 (おやこうこう). Noun ungrateful child; unfilial child Kanji 親 parent. Read as おや. 不 un- 孝 filial piety. Read as コウ. Jinuma: Japanese Dictionary · Word lists