noun
unfilial child; undutiful son/daughter
Refers to a child who does not fulfill their filial duties; can be used for either gender. The term carries a strong moral judgment rooted in Confucian values.
親を大切にしない不孝者は、周りからも信頼されない。
An unfilial child who does not care for their parents will not be trusted by others either.
彼は親の面倒を見ず、不孝者と呼ばれ
He doesn't look after his parents and is called an unfilial child.
孝行 means filial piety or devotion to one's parents, the opposite of being an 不孝者.
Compound of 不孝 (unfilial) and 者 (person). The exact historical derivation is uncertain, but the term reflects traditional Confucian values.