noun, noun which may take the genitive case particle 'no'
custom; habit; customary practice
Refers to a long-standing custom or habitual practice, often with a traditional or social connotation. Can be used for personal habits as well as societal customs.
この村には古くからの習わしがたくさん残っている。
Many old customs remain in this village.
毎朝散歩するのが彼の習わしだ。
It is his habit to take a walk every morning.
習慣 is a more general term for habit or custom, often used for personal routines or social conventions. 習わし carries a stronger nuance of tradition or long-standing practice.
風習 refers specifically to folk customs or traditional practices of a region or group, while 習わし can also refer to personal habits.
Derived from the verb 習う (ならう, 'to learn'), with the nominalizing suffix わし. Originally referred to something learned and passed down, hence 'custom' or 'habit'.