beyond (one's) ken

Advanced beyond one's ability to understand or make sense of the subject matter or task at hand. The stuff they're teaching in this advanced math class is beyond my ken.

Common Names:

Name	Pronounced	Usage
Gulla	-	Ancient Scandinavian
Babs	[bæbz]
Kent	KENT	English
Preeti	-	Indian, Hindi, Marathi, Gujarati
Dani (2)	-	Hungarian, Spanish
Helladios	-	Late Greek