The characteristic of being mischievous; the tendency to make mischief.(noun)
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Use "mischievousness" in a sentence
"He really manages to capture the spirit of George Herriman's creations, from the mischievousness of Ignatz Mouse to the surrealism of the setting to just the overall playfulness of the layout of the piece."
"Ms. Eastwood, who is headed to Las Vegas at the end of the week, then asked, with a twinkle of mischievousness in her eye, "Is there a smoking ban there?""
"But in the context of the weekend's stories, the show – staged at the Conciergerie, from where Marie Antoinette was escorted to her death – appeared to send another message: that the mischievousness and irreverence that was a part of McQueen's soul lives on at the label."