The Spirit of Yahweh came on him, and he judged Israel; and he went out to war, and Yahweh delivered Cushan Rishathaim king of Mesopotamia into his hand: and his hand prevailed against Cushan Rishathaim.
The king’s name was Cushan (Judges 3:8). The last part of the hyphenated name Cushan-rishathaim means "doubly wicked." The Israelites who experienced his harsh rule over them for eight years probably added it to his given name.