Sitzkrieg is a noun that refers to a war or phase of war in which there is little or no active warfare. 

Our word of the day was based on the German-based word blitzkrieg. It was first coined to describe an intense bombing during World War Two and has since been used to describe any intense bombing intended to bring about a swift victory. But while blitzkrieg meant ‘lighting war,’ sitzkrieg means ‘sitting war.’ Here’s an example of sitzkrieg in use:

After a week of heavy bombing, the sitzkrieg that took place in April was considerably less intense. Sadly, this period without active warfare didn’t last.