Synonyms for Murder (same or very similar meaning)
WordNet sense 1 (kill intentionally and with premeditation):
dispatch, hit, off, remove, slay, polish off, bump offWordNet sense 2 (alter so as to make unrecognizable):
mangle, mutilateWordNet sense 3 (unlawful premeditated killing of a human being by a human being):
execution, slayingFrom the ODE community, based on WordNetadd/edit