Enthusiastic about, as in Dad is big on Christmas with the whole family. [Slang; mid-1800s]
6 Words That Broke Through On The Big ScreenRead more in this article about some frequently asked questions and fun facts related to our definitions.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.