Select the most appropriate one-word substitution for the given group of words. 

One who feeds on human flesh 

Cannibal

The most appropriate one-word substitution for "one who feeds on human flesh" is cannibal.

• Carnivorous means eating meat.
• Herbivorous means eating plants.
• Animal can refer to any living organism that is not a plant.

The word cannibal comes from the Latin word "cannibalis," meaning "pertaining to the Caribs." The Caribs were a group of people who lived in the Caribbean Islands and were known for their practice of cannibalism.