约定俗成
Traditional form:
約定俗成
Pinyin (reading):
yuēdìngsúchéng
Definitions:
- established by popular usage (idiom); common usage agreement
- customary convention
Characters:
- 约 - treaty, covenant, agreement
- 定 - to decide, to fix, to settle; to order; definite, fixed, sure
- 俗 - social customs; vulgar, unrefined
- 成 - to accomplish; to become; to complete, to finish; to succeed
Traditional characters: