mischiefing

Verb

mischief (third-person singular simple present mischiefs, present participle mischiefing, simple past and past participle mischiefed)

1. (obsolete, transitive) 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, J[ames] M[atthew] Barrie, “The Island Come True”, in Peter and Wendy, 1st American edition, New York, N.Y.: Charles Scribner’s Sons, →OCLC, page 86
2. (obsolete, transitive) 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, John Dunton, The Phenix, page 403

See all 11 meanings of mischief