Abarim Publications' online Biblical Hebrew Dictionary
The verb חרד (harad) primarily means to shake and secondarily to tremble with fear or to be "anxiously careful" as BDB Theological Dictionary puts it. It's used to describe a mountain trembling (Exodus 19:18), being startled out of sleep (Ruth 3:8), trembling indignantly (Genesis 27:33), to come or go anxiously careful (2 Kings 4:13), or scare or terrify people into submission (Judges 8:12, Job 11:19, Jeremiah 30:10).
This verb's derivatives are:
- The adjective חרד (hared), meaning trembling or afraid (Judges 7:3, Ezra 9:4).
- The feminine noun חרדה (harada), meaning a trembling or fear (1 Samuel 14:15, 2 Kings 4:13, Daniel 10:7).