Sunnethly 

To do in a Sunneth-like fashion or manner

I walk Sunnethly down the street

Sunnethly by Paparazzii November 12, 2009

non-Sunnethly 

Anything that is not done in a manner that can be considered Sunnethly.

She ate her dinner non-Sunnethly.

non-Sunnethly by Disco Queen November 13, 2009