say it: MUR-dur-ur
murderer is a noun meaning "a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)". It carries one recorded sense.
a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for murderer come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.