The term 'Mussolini Moniker' refers to two nicknames given to Benito Mussolini, the fascist dictator of Italy from 1922 to 1943. The first nickname is 'DUCE' which is a four-letter Italian word meaning leader or chief. The second nickname is 'Il DUCE' which is a six-letter Italian phrase meaning 'the leader'. Both nicknames were used by Mussolini's supporters and opponents alike to refer to him during his reign.