unwritten law

An accepted although informal rule of behavior, as in It's an unwritten law that you lock the gate when you leave the swimming pool. [Mid-1400s]

Name	Pronounced	Usage
Ama	-	Western African, Akan
Schuyler	SKIE-lər	English
Kenzie	KEN-zee	English
Benayahu	-	Biblical Hebrew
Mechthild	MEKHT-hilt	German
Brechtje	-	Dutch