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
Ceallach	KEL-akh	Irish
ÁDÁM	AH-dahm	Hungarian
Nabu	-	Near Eastern Mythology
Traugott	-	German
Sari (1)	SAH-ree	Finnish
Riley	['raili]