noun
outdated custom; tired tradition; convention
Carries a negative nuance, implying a custom or convention that is old-fashioned, restrictive, or burdensome. Often used in critical contexts about social practices.
その村には古い因習がまだ残っている。
Old outdated customs still remain in that village.
因習にとらわれず、新しい方法を試してみよう。
Let's try new methods without being bound by tired traditions.
Compound of 因 (cause, factor, or something one relies on) and 習 (custom, habit). The combination suggests a custom that has become ingrained or habitual, often with a negative sense of being stuck in old ways.