startle [ˈstɑ:tl]

以下由轻松背单词网站提供

vt. 使吓一跳；使惊奇 vi. 惊吓；惊跳；惊奇 n. 惊愕；惊恐

to do something unexpected which surprises and sometimes worries a person or animal

Sorry, I didn't mean to startle you. 对不起，我不是故意想吓你一跳的。
I hope I didn't startle you. 但愿我没有吓着您。