This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Might this be a derivation of honorific infix ㅅ (s) + particle 게 (ge)?”
Daum.net Korean-English Dictionary (2008 January 2 (last accessed)) “께”, in (Please provide the book title or journal name)[1], archived from the original on 9 February 2008