stalker
noun [ C ] uk/ˈstɔː.kər/ us/ˈstɑː.kɚ/
跟踪者；（尤指）跟踪骚扰女性者
a person who illegally follows and watches someone, especially a woman, over a period of time
Several well-known women have been troubled by stalkers recently. 最近有几位知名的女性遭人跟踪骚扰。