/trep'i day"sheuhn/ , n.
1. tremulous fear, alarm, or agitation; perturbation.
2. trembling or quivering movement; tremor.
[ 1595-1605; trepidation- (s. of trepidatio ), equiv. to trepidat ( us ) (ptp. of trepidare to hurry, alarm; see TREPID, -ATE 1 ) + -ion- -ION ]
Syn. 1. trembling, fright. 2. quivering, shaking.