What was another name for the phony war?

The Phony War, which took place from September 1939 to April 1940 during World War II, was also known as the "Sitzkrieg." This term, a play on the German Word "Blitzkrieg," refers to the lack of significant military operations on the Western Front after the initial declarations of war. Despite the war being declared, there were few major battles or movements during this period.