Other forms: stalkers
A stalker is somebody who follows another person obsessively. Report a stalker, a stalker outside the house, her stalker.
Stalking is a criminal offence in its own right in many countries, and the harm is the pattern rather than any single act, which is what makes it hard to prosecute. A deer stalker is the older and entirely different sense — a hunter who tracks deer on foot.
1nounstalkerSomebody who follows another person obsessively.
“She called the police after her stalker followed her home yet again.”
stalker is a person.
Stalk plus -er. The hunting sense came first; the criminal sense grew in the late twentieth century.
Middle English
stalkere
English, today
stalker
From Middle English stalkere, equivalent to stalk + -er.
Etymology from Wiktionary, CC BY-SA