1. devilry(n = noun.act) deviltry - wicked and cruel behavior;
is a kind of evil, immorality, iniquity, wickedness
2. devilry(n = noun.act) devilment, deviltry, mischief, mischief-making, mischievousness, rascality, roguery, roguishness, shenanigan - reckless or malicious behavior that causes discomfort or annoyance in others;
is a kind of misbehavior, misbehaviour, misdeed
has particulars: blaze, hell, monkey business, hooliganism, malicious mischief, vandalism
Derived form verb devil1
devilry, n. (also deviltry) (pl. -ies)
1 a wickedness; reckless mischief. b an instance of this.
2 a black magic. b the Devil and his works.
Etymology:
OF diablerie: -try wrongly after harlotry etc.