Select the option that can be used as a one-word substitute for the given group of words.

One who knows all

Omniscient

The one-word substitute for "one who knows all" is omniscient.

• Topper is a person who is at the top of their class or in a competition.
• Bully is a person who uses their strength or power to intimidate or harm others.
• Anarchist is a person who believes in the absence of government or laws.
• Omniscient means having complete knowledge of everything.