To intensify, to raise to a higher degree, to magnify; to raise the value of.
Baseball, he determined, would be an excellent hobby. “No sense a man’s working his fool head off. I’m going out to the Game three times a week. Besides, fellow ought to support the home team.” He did go and support the team, and enhance the glory of Zenith, by yelling “Attaboy!” and “Rotten!” He performed the rite scrupulously. He wore a cotton handkerchief about his collar; he became sweaty; he opened his mouth in a wide loose grin; and drank lemon soda out of a bottle. He went to the Game three times a week, for one week.
—Sinclair Lewis Babbitt (1922)