an act or instance of mischievous or wicked behavior
4.
diabolic magic or art
5.
demonology
Also: devilry
Word origin
[1780–90; var. of devilry]This word is first recorded in the period 1780–90. Other words that entered Englishat around the same time include: carton, dynamics, fluff, seep, vampire bat
Examples of 'deviltry' in a sentence
deviltry
The wanton deviltry was gone from her face; she looked strangely altered, very solemn and some years older.
Robert Silverberg MAJIPOOR CHRONICLES (1982)
The series allows an inherently conservative, morally secure perspective on bewildering, newfangled deviltry.