mischief UK /ˈmɪsˌt͡ʃiːf/US /ˈmɪs.t͡ʃɪf/noun 10verb 2forms 3 noun10 •Conduct that playfully causes petty annoyance.Drink led to mischief. •A playfully annoying action.John's mischief, tying his shoelaces together, irked George at first. •A criminal offence defined in various ways in various jurisdictions, sometimes including causing damage to another's property. •A nest or pack of mice or rats.Kirac, the leader of the rats under his charge, speaks to the major through his telepathic abilities that manifested after the alien virus infected him and his mischief of rats. — 2014 •(euphemistic) The Devil; used as an expletive.What the mischief are you? and how the mischief did you get here, and where in thunder did you come from? — 1967 •(Australia, informal) Casual and/or flirtatious sexual acts. •Harm or injury. •Harm or trouble caused by an agent or brought about by a particular cause.She had mischief in her heart.Sooner or later he'll succeed in doing some serious mischief. •An injury or an instance of harm or trouble caused by a person or other agent or cause.It may end in her doing a great mischief to herself—and perhaps to others too. •(no longer used) A cause or agent of annoyance, harm or injury, especially a person who causes mischief.Epimetheus was scatter-brained and a mischief to men for having taken the woman [Pandora] that Zeus had formed. — 1993 verb2 •(no longer used) To do a mischief to; to harm."Not now, Smee," Hook said darkly. "He is only one, and I want to mischief all the seven. Scatter and look for them." — 1911 •(no longer used) To slander.And so it hath been divers times; Men mischiefing the Jews to excuse their own Wickedness: as to instance one Precedent in the time of a certain King of Portugal. — 1708 formsmischiefed · mischiefing · mischiefs