Synonyms for Devilry (same or very similar meaning)
WordNet sense 1 (wicked and cruel behavior):
deviltry
WordNet sense 2 (reckless or malicious behavior that causes discomfort or annoyance in others):
devilment, mischief, mischievousness, roguery, roguishness, shenanigan, mischief-making, rascality
From the ODE community, based on WordNet
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