יָרַע (yâraʻyaw-rah'verbquiver)
[Heb] יָרַע ETCBC: ירע‎ (verb|quiver) OSHL: j.dn.aa TWOT: 917 GK: H3760
Derivation: a primitive root;
Strong's: properly, to be broken up (with any violent action) i.e. (figuratively) to fear
KJV: be grevious (only Isaiah 15:4; the rest belong to רָעַע).