patricide
noun /ˈpætrɪsaɪd/
/ˈpætrɪsaɪd/
[uncountable, countable] (formal)- the crime of killing your father; a person who is guilty of this crime compare fratricide, matricide, parricideTopics Crime and punishmentc2Word Originearly 17th cent.: from late Latin patricidium, alteration of Latin parricidium ‘murder of a parent’, with first element of unknown origin, but for long associated with Latin pater ‘father’ and parens ‘parent’.