a. [ L. trepidus. ] Trembling; quaking. Thackeray. [ 1913 Webster ]

n. [ F. trépidation, L. trepidatio, fr. trepidare to hurry with alarm, to tremble, from trepidus agitated, disturbed, alarmed; cf. trepit he turns, Gr. &unr_; to turn, E. torture. ] 1. An involuntary trembling, sometimes an effect of paralysis, but usually caused by terror or fear; quaking; quivering. [ 1913 Webster ]

2. Hence, a state of terror or alarm; fear; confusion; fright; as, the men were in great trepidation. [ 1913 Webster ]

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. [ 1913 Webster ]

Syn. -- Tremor; agitation; disturbance; fear. [ 1913 Webster ]

n. Trepidation. [ R. ] [ 1913 Webster ]