Choose the word that can substitute the given group of words.

Killing one’s father

Patricide

The word that can substitute the given group of words is patricide.

• Insecticide is a substance that kills insects.
• Suicide is the act of intentionally killing oneself.
• Tyrannicide is the act of killing a tyrant.
• Patricide is the act of killing one's father.

Patricide is the most appropriate word for the given group of words because it specifically refers to killing one's father. It is derived from the Latin words pater, meaning "father," and cide, meaning "to kill."