if you are in muon discover go to "sources">"configure sources"
check all on the Kubuntu software tab
then click the "other software"tab and make sure "canonical partners" is checked.
close muon
and back at the konsole:
sudo apt-get update
sudo apt-get install skype
Src: http://community.skype.com/t5/Linux-archive/How-to-install-Skype-for-Kubuntu-14-04/td-p/3602591
