maven

and mavin (ˈmevnæ)

1. n. an expert; a self-proclaimed expert. (From Hebrew mevin via Yiddish.) A maven in the stock market you are not.

2. in. to act as a maven (sense 1). She’s always mavening about something.

Name	Pronounced	Usage
Gianpiero	jahn-PYE-ro	Italian
Ashplant	['æʃpla:nt]
Wibke	-	German
Elin	E-lin (Swedish, Norwegian)	Swedish, Norwegian, Danish, Welsh
Tudor (2)	-	Romanian
Livnat	-	Hebrew