mirthless
adjective
mirth·less ˈmərth-ləs
: containing no gaiety or joy
A vague mirthless grin contracted Liff Hyatt's face …—
Edith Wharton
Voldemort turned his scarlet eyes upon Harry, laughing a high, cold, mirthless laugh.—
J. K. Rowling
mirthlessness noun
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Merriam-Webster unabridged



