[n] a feeling of alarm or dread
\Trep`i*da"tion\, n. [F. tr['e]pidation, L. trepidatio, fr. trepidare to hurry with alarm, to tremble, from trepidus agitated, disturbed, alarmed; cf. trepit he turns, Gr. ? to turn, E. torture.]
1. An involuntary trembling, sometimes an effect of paralysis, but usually caused by terror or fear; quaking; quivering.
2. Hence, a state of terror or alarm; fear; confusion; fright; as, the men were in great trepidation.
3. (Anc. Astron.) A libration of the starry sphere in the Ptolemaic system; a motion ascribed to the firmament, to account for certain small changes in the position of the ecliptic and of the stars. Syn: Tremor; agitation; disturbance; fear.