When it comes to describing an "insane stalker," there are a plethora of words that can be used as synonyms to convey the same meaning. These include "obsessive follower," "delusional pursuer," "deranged admirer," "pathological tracker," "psychotic watcher," "maniacal chaser," "mad hunter," "crazed monitor," "unhinged observer," and "lunatic shadow." These words all evoke a sense of danger and discomfort, highlighting the dangerous nature of an individual who exhibits stalking behavior. It is important to recognize the severity of this behavior and seek help if needed, as stalking can have serious consequences for both the victim and the perpetrator.