Aberemurder Definition: A spontaneous and gratuitous murder. Related Terms: Murder An obsolete term of old English common law referring to a murder which was neither accidental, as a manslaughter, nor was it premeditated or accidental. John Bouvier's Law Dictionary defines aberemurder as follows: "In old English law. An apparent, plain or downright murder." Taken from the Latin word aberemurdrum. REFERENCES: Duhaime, Lloyd, Duhaime's Dictionary of Criminal Law Categories & Topics: Ancient Common Law Dictionary Criminal Law Dictionary Find you are constantly looking up definitions? Try our search provider (works in most modern browsers) If you find an error or omission in Duhaime's Legal Dictionary, or if you have legal term suggestion, we'd love to hear from you!