Parricide

[Sarah]

The act or crime of murdering one's own father or any ancestor.

[Sarah]

The act of killing a close relative either by [murder], [accident] or [malicious] [intent] in not assisting in giving immediate medical assistance. Or to aid in the false imprisonment of the relative until they are dead.
To stand by and let a close relative die i.e [Mom] or [Dad] and do nothing, while rubbing your fingers together with the thought of a nice big fat [inheritance].

[Michiko]

the crime of murdering a close relation, especially a parent

[Gregory]

The killing of a parent or other near relative.