trepidation
Word family adjectivetrepidtrepidanttrepidatorynountrepidation
trep·i·da·tion /ˌtrepəˈdeɪʃən/ noun [uncountableU] FRIGHTENEDa feeling of anxiety or fear about something that is going to happen 惊恐,惊惶,不安 With some trepidation, I opened the door. 我有些惴惴不安地打开了门。
Origin trepidation (1400-1500) Latin trepidatio, from trepidare “to shake”