murder
n. countablen. the crime of killing another person on purpose.
n. the unlawful and premeditated killing of one human being by another.
The police are investigating the murder.
He was found guilty of murder and sentenced to life in prison.
The detective pieced together the evidence, revealing a complex motive for the murder that went far beyond simple greed.
From Middle English murder, murdre, mourdre, alteration of earlier murthre (“murder”) (see murther), from Old English morþor (“secret slaying, unlawful killing”) and Old English myrþra (“murder, homicide”), both from Proto-West Germanic morþr, from Proto-Germanic murþrą (“death, killing, murder”), from Proto-Indo-European mr̥tro- (“killing”), from Proto-Indo-European mer-, mor-, mr̥- (“to die”). Akin to Gothic 𐌼𐌰𐌿𐍂𐌸𐍂 (maurþr, “murder”), Old High German mord (“murder”), Old Norse morð (“murder”), Old English myrþrian (“to murder”) and morþ. The -d- in the Middle English form may have been influenced in part by Anglo-Norman murdre, from Old French murdre, from Medieval Latin murdrum (whence the English doublet of murdrum), from Frankish morþr, murþr (“murder”), from the same Germanic root, though this may also have been wholly the result of internal development (compare burden, from burthen). (crows): Attested at least since 1475.
He did a murder.He committed a murder.The verb that collocates with 'murder' is 'commit', not 'do'.