known quantity

someone whose character, personality, and behavior are recognized and understood. We need not worry about how John will behave. He is a known quantity. Lisa is a known quantity and I am sure she will not surprise us by voting with the opposition.

Common Names:

Name	Pronounced	Usage
Bakarne	-	Basque
Vinka	-	Croatian
Abiodun	-	Western African, Yoruba
Alwin	AHL-veen (German), AHL-win (Dutch), AHL-vin (Dutch)	German, Dutch, Ancient Germanic
Sa'ida	-	Arabic
Djehuti	-	Egyptian Mythology