What is another word for flat back four?
Pronunciation: [flˈat bˈak fˈɔː] (IPA) 
A "flat back four" is a term used in soccer to describe a defensive formation consisting of four defenders who are positioned in a straight line, with no player playing as a sweeper. This tactic is commonly used to create a solid base at the back and to maintain defensive stability. There are several synonyms that can be used for "flat back four," such as "basic back four," "linear back line," or "straight defense." Other alternative terms include "four-man backline," "flat-squared defense," and "straight-four defense." The use of these synonyms depends on the context and the preference of the individual or team.
