🔼The name Cushan-rishathaim in the Bible
There's only one man named Cushan-rishathaim in the Bible. He is the king of Aram-naharaim at the chaotic time between Joshua's death and the rise of Othniel, the first judge and the nephew of Caleb (Judges 3:8).
After Joshua dies, Israel spirals into a state of anarchy, and the people go after the Baals and Asheroth, until the country is so weak that the Lord lets Cushan-rishathaim conquer Israel and enslave it for eight years. Then the Israelites remember YHWH and He raises up Othniel, son of Kenaz, the brother of Caleb. Othniel defeats Cushan-rishathaim and leads Israel for another peaceful forty years.
🔼Etymology of the name Cushan-rishathaim
The name Cushan-rishathaim consists of two elements:
The second part of our name is a plural form of a noun derived from the verb רשע (rsh'), meaning to be wicked:
For a meaning of the name Cushan-rishathaim, NOBSE Study Bible Name List forgoes the troublesome Cushan-part and reads a mere Extra Wicked.
Jones' Dictionary of Old Testament Proper Names appears to skips this name all together, which is quite unusual for Jones. BDB Theological Dictionary doesn't make an attempt to translate Cushan-rishathaim.