Often used in fixed expressions like 世の習い (the way of the world) or 習いとなる (to become a habit). Describes a common or expected pattern of behavior or life.
Standard kanji form; commonly used in set phrases like 世の習い.
ならいUsage29%
Etymology
Derived from the verb 習う (ならう, 'to learn'), originally meaning something learned and thus habitual. The exact historical development is uncertain, but the meaning shifted from 'learned behavior' to 'custom/habit'.