The name Raddai in the Bible
Etymology of the name Raddai
There are several ways to go about interpreting the name Raddai. The name Raddai looks like an imperative of the verb ירד (yarad), go down:
This imperative form רדי is used in Isaiah 47:1 and Jeremiah 48:18: Come down...!
BDB Theological Dictionary and others however suggest that the name Raddai comes from the verb רדד (radad), meaning to beat down or subdue:
The letter yod added to form the name Raddai, some suggest, is a remnant of the name of the Lord YHWH.
For a meaning of the name Raddai, NOBSE Study Bible Name List reads Yahweh Has Subdued. Jones' Dictionary of Old Testament Proper Names reads simply Subduing.