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Use "mirthfully" in a sentence
"The man beside me notices and shakes a finger at Peter mirthfully, “What do they call it in America?” the man asks, smiling."
"Was Charles Addams (1912-88), the mirthfully macabre cartoonist who inspired the "Addams Family" TV show and movies — not to mention the musical that opens on Broadway next month — a "genius"?"
"Two readies mirthfully pushed Stevie back into her dressing room to complete her toilette."