adj.
- Full of gladness and gaiety.
- Characterized by or expressing gladness and gaiety: a warm, tender, and mirthful movie.
mirthfulness mirth'ful·ness n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
