noun
mischievous or deceitful behavior
• Hypernyms:
↑mischief, ↑mischief-making, ↑mischievousness, ↑deviltry, ↑devilry, ↑devilment, ↑rascality, ↑roguery, ↑roguishness, ↑shenanigan
* * *
noun [noncount]
informal
1 : playful tricks or jokes
Our teacher warned us not to try any monkey business while she was out of the room.
2 : illegal or improper activity or behavior
political monkey business
* * *
dishonest or silly behaviour
•
There's been some monkey business going on here.
Useful english dictionary. 2012.