Hence, a state of terror or alarm; fear; confusion; fright; as, the men were in great trepidation
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
Trepidation is fear or anxiety about something that you are going to do or experience. It was with some trepidation that I viewed the prospect of cycling across Uganda. = anxiety. a feeling of anxiety or fear about something that is going to happen (trepidatio, from trepidare )