conventional morality; traditional morals
Refers to moral standards based on long-standing customs or social conventions, often with a nuance of being outdated or restrictive.
He lived freely, unbound by conventional morality.
There are many works that criticize traditional morals.
道徳 is a general term for morality or ethics, while 因習道徳 specifically refers to morality rooted in old customs and conventions, often with a critical tone.
慣習 means 'custom' or 'convention' in a broad sense, whereas 因習道徳 focuses on the moral aspect of such customs.
Compound of 因習 (conventional practice, old custom) and 道徳 (morality). The exact historical derivation is uncertain, but the term is used to describe morality derived from traditional customs.