FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

shadad shaw-dad' — a primitive root; properly, to be burly, i.e. (figuratively) powerful (passively, impregnable); by implication, to ravage:--dead, destroy(-er), oppress, robber, spoil(-er), X utterly, (lay) waste.