deviltry
de·viltry
noun
2.
reckless or malicious behavior that causes discomfort or annoyance in others
Origin
Variant of devilry, influenced by gallantry.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.