Definition of murderer noun from the Oxford Advanced Learner's Dictionary

 

murderer

 noun
noun
BrE BrE//ˈmɜːdərə(r)//
 
; NAmE NAmE//ˈmɜːrdərər//
 
Criminals
 
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a person who has killed somebody deliberately and illegally synonym killer a convicted murderer a mass murderer (= who has killed a lot of people) See related entries: CriminalsExtra examples 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. A convicted murderer was on the run last night. How do we know he’s not a mass murderer?
See the Oxford Advanced American Dictionary entry: murderer