What is another word for professional murderer?
Pronunciation: [pɹəfˈɛʃənə͡l mˈɜːdəɹə] (IPA) 
The term "professional murderer" is commonly used to describe an individual who is hired to kill someone for money. However, there are several other synonyms that can be used for this term. Some of these include assassin, hitman, hired gun, executioner, contract killer, and sniper. All of these words refer to someone who is paid to take someone's life. While these words may have different connotations and nuances, they all describe the same basic profession. Ultimately, no matter what word is used, the act of killing for money is an ethically reprehensible and criminal act.
