- The definition of mirthful is someone or something full of humor or laughter.
An example of mirthful is a person who is laughing and giggling.
mirthful definition by Webster's New World
full of, expressing, or causing mirth; merry
mirthful definition by American Heritage Dictionary
- Full of gladness and gaiety.
- Characterized by or expressing gladness and gaiety: a warm, tender, and mirthful movie.
- mirthˈful·ly adverb
- mirthˈful·ness noun