Meaning

noun unlawful premeditated killing of a human being by a human being

verb kill intentionally and with premeditation

verb alter so as to make unrecognizable

originFrom 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…

Etymology from Wiktionary, CC BY-SA 3.0