Definition of "mirthless" [mirth•less]

• Devoid of gladness and gaiety. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Fenn laughed what novelists are fond of calling a mirthless laugh."
• "Frank Rich of the New York Times called the comedian's performance "mirthless""
• "It was not boisterous; indeed, it was consciously refined, -- mirthless, meaningless."