Regicide is the term for killing a monarch or king. It is considered a serious crime and historically has been punished harshly.
Regicide would be the specific term for killing a king. Assassination would also be appropriate for killing of any important figure, not just a king.
the term you may be looking for is: Usurp which basically means, to kick out or remove from position or power
what English king authorized the killing of gypsies?
The killing of a king is commonly referred to as "regicide." This term derives from the Latin words "rex," meaning king, and "cida," meaning killer. Regicide can occur in various contexts, often associated with political power struggles or revolutions. Historically, it has been viewed as a grave offense due to the sanctity of monarchy in many cultures.
regicide
Macduff believes that Malcolm and Donalbain, the sons of King Duncan, are responsible for killing their father.
by killing the king
Regicide
The killing of a king
king junvill ,, the king who made the word junel gwapo
By killing the king currently in power
The king