koselig

Etymology
From.

Adjective

 * 1) cosy, cozy (US), comfortable
 * 2) nice, pleasant
 * 3) hello, a greeting

Usage notes
Koselig's use as a greeting is from its appearance in the Norwegian phrase "koselig å hilse på deg ("nice to meet/see you"). As such, it most frequently appears following other words of greeting as in "Hei! Koselig!" or "Hallo, koselig".