Quisling; split like QUIT+LINK means a culprit quits and collaborate (link)with enemy
Quislings are prone to QUIZZLINGS by the government when caught!
Quisling sounds like sibling who aids betraying
quit + ling = one who quits linguistic love.
Quisling, after Norwegian politician Vidkun Quisling, who assisted Nazi Germany to conquer his own country and ruled the collaborationist Norwegian government, is a term used to describe traitors and collaborators.
the culprit was questioned(QUIZ)...who is the TRAITOR in (LINGuistic department)who helped him to leak out the paper.
"quisling" == actually sounds like "wrestling" , ie "traitors" are always in a mood to wrestle with you
QUISLING -> CHRIST + LYING. In the Bible, Judas was caught LYING to CHRIST as he plotted to betray him.
quis+ling ; quis sounds like wise/cunning person
quisling = quis + ling; quit link i.e. quit the link is always a betrayer.