startle /ˈstɑ:tl/ vt. 使惊吓，使吃惊：be startled at/by the news 听到这消息大吃一惊；be startle at the sight 见此情景吓了一跳

startling adj.令人吃惊的

startlingly adv.令人吃惊地，惊人地：［考句］ When he finally emerged from the cave after thirty days, John was startlingly pale.当约翰三十天后终于出了山洞的时候，他的脸色白的吓人。