Strong's #7374: retet (pronounced reh'-tet)
 from an unused root meaning to tremble; terror:--fear.
Brown-Driver-Briggs Hebrew Lexicon:
 
  reṭeṭ 
 
 1) trembling, panic
 
  Part of Speech: noun masculine
Relation: from an unused root meaning to tremble
Usage:
This word is used 1 times:
Jeremiah 49:24: "is waxed feeble, and turneth herself to flee,  and fear hath seized on her: anguish and sorrows have taken"