murderer
noun /ˈmɜːdərə(r)/
  /ˈmɜːrdərər/
 - a person who has killed somebody deliberately and illegally synonym killer- A convicted murderer was on the run last night.
- a mass murderer (= who has killed a lot of people)
 Extra ExamplesTopics Crime and punishmentb1- Does the death penalty deter would-be murderers?
- He protested his innocence and promised to help police track down the real murderer.
- The identity of her murderer has not yet been revealed.
- The murderer has struck again.
- How do we know he's not a mass murderer?
 Oxford Collocations Dictionaryadjective- accused
- alleged
- suspected
- …
 - hunt
- hunt down
- hunt for
- …
 - strike
- kill somebody
 - bring a murderer to justice
- the identity of the murderer