Select the most appropriate word for the given group of words.

An act of murdering one's brother

Fratricide

The most appropriate word for the given group of words is fratricide.

• Fratricide is the act of murdering one's brother or sister.
• Regicide is the act of murdering a king or queen.
• Genocide is the deliberate killing of a large group of people, especially those of a particular ethnic group or nation.
• Patricide is the act of murdering one's father.