stalker

1 ENTRIES FOUND:
stalker /ˈstɑːkɚ/ noun
plural stalkers
stalker
/ˈstɑːkɚ/
noun
plural stalkers
Britannica Dictionary definition of STALKER
[count]
1 
: a person who closely follows and watches another person for a long period of time in a way that is threatening, dangerous, etc.
2 
: a person who slowly and quietly hunts an animal