principicideEtymologyFrom Latin prī̆nceps, prī̆ncipis + -cide.principicide means The killing of a prince. Lexicurio rates it Distinctive — a strength score of 68 out of 100.nounThe killing of a prince.“The Roumanians hold the world record for principicide, or the assassination of princes, with Serbia—whose record in this regard is not to be despised, either—a bad second.”One who kills a prince.“The law has been vindicated, and the outraged feelings of the people of these colonies have been avenged by the execution this morning of the wretched man—the would-be principicide [Henry O’Farrell].”