stalker

/ˈstɔkər/
noun
  1. A person who follows or observes someone in a persistent, often threatening way.
    • The police arrested the stalker who had been sending threatening letters.
    • She changed her phone number to avoid her online stalker.
    • The celebrity hired a bodyguard after a stalker showed up at her home.
  2. A person who moves stealthily to hunt or pursue prey.
    • The hunter was known as a patient stalker who never missed a shot.
    • In the documentary, the stalker followed the tiger through the jungle.
    • The experienced stalker could track a deer for miles without being seen.
Antonyms
What does "stalker" mean? | whatsthatwordmean | whatsthatwordmean