Originally Answered:
The word entertain comes from the Medieval Latin intertenere, with the prefix inter meaning “inside” and the suffix tenere, derived from the Indo-European root ten, which means to stretch or expand. Thus, the sense of entertainment has come to involve something that stretches the mind and the imagination. In this way, the familiar forms of entertainment—such as sports, movies, music, art, games, and theater—have become dominant cultural forces that influence our perception and highbrow growth, while also generating a lot of joy and pleasure. This is a powerful force that can have negative impacts if not regulated properly.